diff --git a/templates/base/http-clients/fetch-http-client.ejs b/templates/base/http-clients/fetch-http-client.ejs
index 708937fc..a1db3833 100644
--- a/templates/base/http-clients/fetch-http-client.ejs
+++ b/templates/base/http-clients/fetch-http-client.ejs
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
             body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
         }
         ).then(async (response) => {
-            const r = response as HttpResponse<T, E>;
+            const r = response.clone() as HttpResponse<T, E>;
             r.data = (null as unknown) as T;
             r.error = (null as unknown) as E;
 
diff --git a/tests/generated/v2.0/adafruit.ts b/tests/generated/v2.0/adafruit.ts
index 844734e4..7be62365 100644
--- a/tests/generated/v2.0/adafruit.ts
+++ b/tests/generated/v2.0/adafruit.ts
@@ -346,7 +346,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/another-example.ts b/tests/generated/v2.0/another-example.ts
index 15b67a4f..e87e75d6 100644
--- a/tests/generated/v2.0/another-example.ts
+++ b/tests/generated/v2.0/another-example.ts
@@ -322,7 +322,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/another-schema.ts b/tests/generated/v2.0/another-schema.ts
index 31429074..9520976d 100644
--- a/tests/generated/v2.0/another-schema.ts
+++ b/tests/generated/v2.0/another-schema.ts
@@ -210,7 +210,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/api-with-examples.ts b/tests/generated/v2.0/api-with-examples.ts
index 26b1bda1..0a830375 100644
--- a/tests/generated/v2.0/api-with-examples.ts
+++ b/tests/generated/v2.0/api-with-examples.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/authentiq.ts b/tests/generated/v2.0/authentiq.ts
index 83b1860f..4b760c36 100644
--- a/tests/generated/v2.0/authentiq.ts
+++ b/tests/generated/v2.0/authentiq.ts
@@ -229,7 +229,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/enums.ts b/tests/generated/v2.0/enums.ts
index dd34c8fa..0a1b16d2 100644
--- a/tests/generated/v2.0/enums.ts
+++ b/tests/generated/v2.0/enums.ts
@@ -248,7 +248,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/example1.ts b/tests/generated/v2.0/example1.ts
index 70408faf..bae0a69c 100644
--- a/tests/generated/v2.0/example1.ts
+++ b/tests/generated/v2.0/example1.ts
@@ -226,7 +226,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/file-formdata-example.ts b/tests/generated/v2.0/file-formdata-example.ts
index 0edb5c57..8c14477a 100644
--- a/tests/generated/v2.0/file-formdata-example.ts
+++ b/tests/generated/v2.0/file-formdata-example.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/furkot-example.ts b/tests/generated/v2.0/furkot-example.ts
index 6eb84008..9e6b9f0a 100644
--- a/tests/generated/v2.0/furkot-example.ts
+++ b/tests/generated/v2.0/furkot-example.ts
@@ -262,7 +262,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/giphy.ts b/tests/generated/v2.0/giphy.ts
index 6c497f4e..e3be8b63 100644
--- a/tests/generated/v2.0/giphy.ts
+++ b/tests/generated/v2.0/giphy.ts
@@ -446,7 +446,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/github-swagger.ts b/tests/generated/v2.0/github-swagger.ts
index c9dec236..d66f30d4 100644
--- a/tests/generated/v2.0/github-swagger.ts
+++ b/tests/generated/v2.0/github-swagger.ts
@@ -2087,7 +2087,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/path-args.ts b/tests/generated/v2.0/path-args.ts
index 8f47fa21..e8c521c6 100644
--- a/tests/generated/v2.0/path-args.ts
+++ b/tests/generated/v2.0/path-args.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/petstore-expanded.ts b/tests/generated/v2.0/petstore-expanded.ts
index f426f787..f903f774 100644
--- a/tests/generated/v2.0/petstore-expanded.ts
+++ b/tests/generated/v2.0/petstore-expanded.ts
@@ -225,7 +225,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/petstore-minimal.ts b/tests/generated/v2.0/petstore-minimal.ts
index 46919f31..618242fb 100644
--- a/tests/generated/v2.0/petstore-minimal.ts
+++ b/tests/generated/v2.0/petstore-minimal.ts
@@ -197,7 +197,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/petstore-simple.ts b/tests/generated/v2.0/petstore-simple.ts
index 9220014b..952bd81f 100644
--- a/tests/generated/v2.0/petstore-simple.ts
+++ b/tests/generated/v2.0/petstore-simple.ts
@@ -213,7 +213,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/petstore-swagger-io.ts b/tests/generated/v2.0/petstore-swagger-io.ts
index 76363c66..a4a4ddb0 100644
--- a/tests/generated/v2.0/petstore-swagger-io.ts
+++ b/tests/generated/v2.0/petstore-swagger-io.ts
@@ -250,7 +250,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/petstore-with-external-docs.ts b/tests/generated/v2.0/petstore-with-external-docs.ts
index 2b10dcc6..902d064b 100644
--- a/tests/generated/v2.0/petstore-with-external-docs.ts
+++ b/tests/generated/v2.0/petstore-with-external-docs.ts
@@ -205,7 +205,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/petstore.ts b/tests/generated/v2.0/petstore.ts
index 926c3663..1a517200 100644
--- a/tests/generated/v2.0/petstore.ts
+++ b/tests/generated/v2.0/petstore.ts
@@ -204,7 +204,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/query-path-param.ts b/tests/generated/v2.0/query-path-param.ts
index fdf22c81..24c57b78 100644
--- a/tests/generated/v2.0/query-path-param.ts
+++ b/tests/generated/v2.0/query-path-param.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v2.0/uber.ts b/tests/generated/v2.0/uber.ts
index 4ad1962f..68597934 100644
--- a/tests/generated/v2.0/uber.ts
+++ b/tests/generated/v2.0/uber.ts
@@ -268,7 +268,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/additional-properties.ts b/tests/generated/v3.0/additional-properties.ts
index fd587e8a..bbf18d8f 100644
--- a/tests/generated/v3.0/additional-properties.ts
+++ b/tests/generated/v3.0/additional-properties.ts
@@ -196,7 +196,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/additional-properties2.ts b/tests/generated/v3.0/additional-properties2.ts
index d2afa478..84c93361 100644
--- a/tests/generated/v3.0/additional-properties2.ts
+++ b/tests/generated/v3.0/additional-properties2.ts
@@ -193,7 +193,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/allof-example.ts b/tests/generated/v3.0/allof-example.ts
index 381293e6..8574e2ff 100644
--- a/tests/generated/v3.0/allof-example.ts
+++ b/tests/generated/v3.0/allof-example.ts
@@ -203,7 +203,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/anyof-example.ts b/tests/generated/v3.0/anyof-example.ts
index 284e66f2..7b952cdd 100644
--- a/tests/generated/v3.0/anyof-example.ts
+++ b/tests/generated/v3.0/anyof-example.ts
@@ -199,7 +199,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/api-with-examples.ts b/tests/generated/v3.0/api-with-examples.ts
index c60c1c46..af498c48 100644
--- a/tests/generated/v3.0/api-with-examples.ts
+++ b/tests/generated/v3.0/api-with-examples.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/callback-example.ts b/tests/generated/v3.0/callback-example.ts
index 0421e267..7ea2467f 100644
--- a/tests/generated/v3.0/callback-example.ts
+++ b/tests/generated/v3.0/callback-example.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/components-responses.ts b/tests/generated/v3.0/components-responses.ts
index 57cecc9a..bb72ddfd 100644
--- a/tests/generated/v3.0/components-responses.ts
+++ b/tests/generated/v3.0/components-responses.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/explode-param-3.0.1.ts b/tests/generated/v3.0/explode-param-3.0.1.ts
index c395698c..b3c020cb 100644
--- a/tests/generated/v3.0/explode-param-3.0.1.ts
+++ b/tests/generated/v3.0/explode-param-3.0.1.ts
@@ -208,7 +208,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/full-swagger-scheme.ts b/tests/generated/v3.0/full-swagger-scheme.ts
index fda7129d..4b6cb5ab 100644
--- a/tests/generated/v3.0/full-swagger-scheme.ts
+++ b/tests/generated/v3.0/full-swagger-scheme.ts
@@ -8813,7 +8813,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/link-example.ts b/tests/generated/v3.0/link-example.ts
index cff138d0..127cd943 100644
--- a/tests/generated/v3.0/link-example.ts
+++ b/tests/generated/v3.0/link-example.ts
@@ -206,7 +206,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/no-definitions-schema.ts b/tests/generated/v3.0/no-definitions-schema.ts
index c04a43f2..6ae05ba1 100644
--- a/tests/generated/v3.0/no-definitions-schema.ts
+++ b/tests/generated/v3.0/no-definitions-schema.ts
@@ -203,7 +203,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/oneof-example.ts b/tests/generated/v3.0/oneof-example.ts
index aef9b257..5621d729 100644
--- a/tests/generated/v3.0/oneof-example.ts
+++ b/tests/generated/v3.0/oneof-example.ts
@@ -199,7 +199,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/personal-api-example.ts b/tests/generated/v3.0/personal-api-example.ts
index 02f8baf9..1e9454bc 100644
--- a/tests/generated/v3.0/personal-api-example.ts
+++ b/tests/generated/v3.0/personal-api-example.ts
@@ -374,7 +374,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/petstore-expanded.ts b/tests/generated/v3.0/petstore-expanded.ts
index 3ee78d21..26ac904a 100644
--- a/tests/generated/v3.0/petstore-expanded.ts
+++ b/tests/generated/v3.0/petstore-expanded.ts
@@ -205,7 +205,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/petstore.ts b/tests/generated/v3.0/petstore.ts
index 7a5feb90..7ac4b9ef 100644
--- a/tests/generated/v3.0/petstore.ts
+++ b/tests/generated/v3.0/petstore.ts
@@ -206,7 +206,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/recursive-schema.ts b/tests/generated/v3.0/recursive-schema.ts
index 93f8060c..681923e1 100644
--- a/tests/generated/v3.0/recursive-schema.ts
+++ b/tests/generated/v3.0/recursive-schema.ts
@@ -200,7 +200,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/responses.ts b/tests/generated/v3.0/responses.ts
index a4877d80..e192574f 100644
--- a/tests/generated/v3.0/responses.ts
+++ b/tests/generated/v3.0/responses.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/swaggerhub-template.ts b/tests/generated/v3.0/swaggerhub-template.ts
index 2a3656f9..d84b0fbd 100644
--- a/tests/generated/v3.0/swaggerhub-template.ts
+++ b/tests/generated/v3.0/swaggerhub-template.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/tsoa-odd-types-3.0.2.ts b/tests/generated/v3.0/tsoa-odd-types-3.0.2.ts
index c2d5151d..f1b9f054 100644
--- a/tests/generated/v3.0/tsoa-odd-types-3.0.2.ts
+++ b/tests/generated/v3.0/tsoa-odd-types-3.0.2.ts
@@ -300,7 +300,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/up-banking.ts b/tests/generated/v3.0/up-banking.ts
index 63d41120..d4e8d26a 100644
--- a/tests/generated/v3.0/up-banking.ts
+++ b/tests/generated/v3.0/up-banking.ts
@@ -931,7 +931,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/uspto.ts b/tests/generated/v3.0/uspto.ts
index 411912f4..e93ddeeb 100644
--- a/tests/generated/v3.0/uspto.ts
+++ b/tests/generated/v3.0/uspto.ts
@@ -221,7 +221,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/wrong-enum-subtypes.ts b/tests/generated/v3.0/wrong-enum-subtypes.ts
index dd574c08..8ce02cf0 100644
--- a/tests/generated/v3.0/wrong-enum-subtypes.ts
+++ b/tests/generated/v3.0/wrong-enum-subtypes.ts
@@ -195,7 +195,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/generated/v3.0/wrong-schema-names.ts b/tests/generated/v3.0/wrong-schema-names.ts
index a5f2a569..cb66d710 100644
--- a/tests/generated/v3.0/wrong-schema-names.ts
+++ b/tests/generated/v3.0/wrong-schema-names.ts
@@ -213,7 +213,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/another-query-params/expected.ts b/tests/spec/another-query-params/expected.ts
index 82b22125..52df16d0 100644
--- a/tests/spec/another-query-params/expected.ts
+++ b/tests/spec/another-query-params/expected.ts
@@ -217,7 +217,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/another-query-params/schema.ts b/tests/spec/another-query-params/schema.ts
index 82b22125..52df16d0 100644
--- a/tests/spec/another-query-params/schema.ts
+++ b/tests/spec/another-query-params/schema.ts
@@ -217,7 +217,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/cli/expected.ts b/tests/spec/cli/expected.ts
index c5a5f5e1..1b0dcb52 100644
--- a/tests/spec/cli/expected.ts
+++ b/tests/spec/cli/expected.ts
@@ -334,7 +334,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/cli/schema.ts b/tests/spec/cli/schema.ts
index c5a5f5e1..1b0dcb52 100644
--- a/tests/spec/cli/schema.ts
+++ b/tests/spec/cli/schema.ts
@@ -334,7 +334,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/defaultAsSuccess/expected.ts b/tests/spec/defaultAsSuccess/expected.ts
index a7a68d96..682abf15 100644
--- a/tests/spec/defaultAsSuccess/expected.ts
+++ b/tests/spec/defaultAsSuccess/expected.ts
@@ -229,7 +229,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/defaultAsSuccess/schema.ts b/tests/spec/defaultAsSuccess/schema.ts
index a7a68d96..682abf15 100644
--- a/tests/spec/defaultAsSuccess/schema.ts
+++ b/tests/spec/defaultAsSuccess/schema.ts
@@ -229,7 +229,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/defaultResponse/expected.ts b/tests/spec/defaultResponse/expected.ts
index 98692571..4962293d 100644
--- a/tests/spec/defaultResponse/expected.ts
+++ b/tests/spec/defaultResponse/expected.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/defaultResponse/schema.ts b/tests/spec/defaultResponse/schema.ts
index 98692571..4962293d 100644
--- a/tests/spec/defaultResponse/schema.ts
+++ b/tests/spec/defaultResponse/schema.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/deprecated/expected.ts b/tests/spec/deprecated/expected.ts
index fe1a8c3d..22767595 100644
--- a/tests/spec/deprecated/expected.ts
+++ b/tests/spec/deprecated/expected.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/deprecated/schema.ts b/tests/spec/deprecated/schema.ts
index fe1a8c3d..22767595 100644
--- a/tests/spec/deprecated/schema.ts
+++ b/tests/spec/deprecated/schema.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/dot-path-params/expected.ts b/tests/spec/dot-path-params/expected.ts
index dee48d60..fc274dd7 100644
--- a/tests/spec/dot-path-params/expected.ts
+++ b/tests/spec/dot-path-params/expected.ts
@@ -191,7 +191,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/dot-path-params/schema.ts b/tests/spec/dot-path-params/schema.ts
index dee48d60..fc274dd7 100644
--- a/tests/spec/dot-path-params/schema.ts
+++ b/tests/spec/dot-path-params/schema.ts
@@ -191,7 +191,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/enumNamesAsValues/expected.ts b/tests/spec/enumNamesAsValues/expected.ts
index a542b0c3..b08dca68 100644
--- a/tests/spec/enumNamesAsValues/expected.ts
+++ b/tests/spec/enumNamesAsValues/expected.ts
@@ -381,7 +381,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/enumNamesAsValues/schema.ts b/tests/spec/enumNamesAsValues/schema.ts
index a542b0c3..b08dca68 100644
--- a/tests/spec/enumNamesAsValues/schema.ts
+++ b/tests/spec/enumNamesAsValues/schema.ts
@@ -381,7 +381,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/extractRequestBody/expected.ts b/tests/spec/extractRequestBody/expected.ts
index 75449a8b..2a26c8e7 100644
--- a/tests/spec/extractRequestBody/expected.ts
+++ b/tests/spec/extractRequestBody/expected.ts
@@ -342,7 +342,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/extractRequestBody/schema.ts b/tests/spec/extractRequestBody/schema.ts
index 75449a8b..2a26c8e7 100644
--- a/tests/spec/extractRequestBody/schema.ts
+++ b/tests/spec/extractRequestBody/schema.ts
@@ -342,7 +342,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/extractRequestParams/expected.ts b/tests/spec/extractRequestParams/expected.ts
index 914ae447..08b222e0 100644
--- a/tests/spec/extractRequestParams/expected.ts
+++ b/tests/spec/extractRequestParams/expected.ts
@@ -264,7 +264,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/extractRequestParams/schema.ts b/tests/spec/extractRequestParams/schema.ts
index 914ae447..08b222e0 100644
--- a/tests/spec/extractRequestParams/schema.ts
+++ b/tests/spec/extractRequestParams/schema.ts
@@ -264,7 +264,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/extractResponseBody/expected.ts b/tests/spec/extractResponseBody/expected.ts
index 66af5c43..6ac2fc9e 100644
--- a/tests/spec/extractResponseBody/expected.ts
+++ b/tests/spec/extractResponseBody/expected.ts
@@ -344,7 +344,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/extractResponseBody/schema.ts b/tests/spec/extractResponseBody/schema.ts
index 66af5c43..6ac2fc9e 100644
--- a/tests/spec/extractResponseBody/schema.ts
+++ b/tests/spec/extractResponseBody/schema.ts
@@ -344,7 +344,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/extractResponseError/expected.ts b/tests/spec/extractResponseError/expected.ts
index 54eab4ab..c7c17373 100644
--- a/tests/spec/extractResponseError/expected.ts
+++ b/tests/spec/extractResponseError/expected.ts
@@ -339,7 +339,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/extractResponseError/schema.ts b/tests/spec/extractResponseError/schema.ts
index 54eab4ab..c7c17373 100644
--- a/tests/spec/extractResponseError/schema.ts
+++ b/tests/spec/extractResponseError/schema.ts
@@ -339,7 +339,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/js/schema.js b/tests/spec/js/schema.js
index 4ce1a9a0..b023cd0d 100644
--- a/tests/spec/js/schema.js
+++ b/tests/spec/js/schema.js
@@ -125,7 +125,7 @@ export class HttpClient {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response;
+      const r = response.clone();
       r.data = null;
       r.error = null;
       const data = !responseFormat
diff --git a/tests/spec/jsSingleHttpClientModular/expected/http-client.js b/tests/spec/jsSingleHttpClientModular/expected/http-client.js
index e2ed3868..337c65e4 100644
--- a/tests/spec/jsSingleHttpClientModular/expected/http-client.js
+++ b/tests/spec/jsSingleHttpClientModular/expected/http-client.js
@@ -125,7 +125,7 @@ export class HttpClient {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response;
+      const r = response.clone();
       r.data = null;
       r.error = null;
       const data = !responseFormat
diff --git a/tests/spec/jsSingleHttpClientModular/generated/http-client.js b/tests/spec/jsSingleHttpClientModular/generated/http-client.js
index e2ed3868..337c65e4 100644
--- a/tests/spec/jsSingleHttpClientModular/generated/http-client.js
+++ b/tests/spec/jsSingleHttpClientModular/generated/http-client.js
@@ -125,7 +125,7 @@ export class HttpClient {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response;
+      const r = response.clone();
       r.data = null;
       r.error = null;
       const data = !responseFormat
diff --git a/tests/spec/modular/expected/http-client.ts b/tests/spec/modular/expected/http-client.ts
index 2ae54666..ed2aebb7 100644
--- a/tests/spec/modular/expected/http-client.ts
+++ b/tests/spec/modular/expected/http-client.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/modular/generated/http-client.ts b/tests/spec/modular/generated/http-client.ts
index 2ae54666..ed2aebb7 100644
--- a/tests/spec/modular/generated/http-client.ts
+++ b/tests/spec/modular/generated/http-client.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/moduleNameFirstTag/expected.ts b/tests/spec/moduleNameFirstTag/expected.ts
index 8235d1fd..e6b7c5d4 100644
--- a/tests/spec/moduleNameFirstTag/expected.ts
+++ b/tests/spec/moduleNameFirstTag/expected.ts
@@ -314,7 +314,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/moduleNameFirstTag/schema.ts b/tests/spec/moduleNameFirstTag/schema.ts
index 8235d1fd..e6b7c5d4 100644
--- a/tests/spec/moduleNameFirstTag/schema.ts
+++ b/tests/spec/moduleNameFirstTag/schema.ts
@@ -314,7 +314,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/moduleNameIndex/expected.ts b/tests/spec/moduleNameIndex/expected.ts
index 6c75412c..82e4a607 100644
--- a/tests/spec/moduleNameIndex/expected.ts
+++ b/tests/spec/moduleNameIndex/expected.ts
@@ -314,7 +314,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/moduleNameIndex/schema.ts b/tests/spec/moduleNameIndex/schema.ts
index 6c75412c..82e4a607 100644
--- a/tests/spec/moduleNameIndex/schema.ts
+++ b/tests/spec/moduleNameIndex/schema.ts
@@ -314,7 +314,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/on-insert-path-param/expected.ts b/tests/spec/on-insert-path-param/expected.ts
index 7acc3dd0..e0a7d5d0 100644
--- a/tests/spec/on-insert-path-param/expected.ts
+++ b/tests/spec/on-insert-path-param/expected.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/on-insert-path-param/schema.ts b/tests/spec/on-insert-path-param/schema.ts
index 7acc3dd0..e0a7d5d0 100644
--- a/tests/spec/on-insert-path-param/schema.ts
+++ b/tests/spec/on-insert-path-param/schema.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/partialBaseTemplate/expected.ts b/tests/spec/partialBaseTemplate/expected.ts
index 2e0ba9dc..eb2391ed 100644
--- a/tests/spec/partialBaseTemplate/expected.ts
+++ b/tests/spec/partialBaseTemplate/expected.ts
@@ -201,7 +201,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/partialBaseTemplate/schema.ts b/tests/spec/partialBaseTemplate/schema.ts
index 2e0ba9dc..eb2391ed 100644
--- a/tests/spec/partialBaseTemplate/schema.ts
+++ b/tests/spec/partialBaseTemplate/schema.ts
@@ -201,7 +201,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/partialDefaultTemplate/expected.ts b/tests/spec/partialDefaultTemplate/expected.ts
index e82921da..c12ca39d 100644
--- a/tests/spec/partialDefaultTemplate/expected.ts
+++ b/tests/spec/partialDefaultTemplate/expected.ts
@@ -197,7 +197,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/partialDefaultTemplate/schema.ts b/tests/spec/partialDefaultTemplate/schema.ts
index e82921da..c12ca39d 100644
--- a/tests/spec/partialDefaultTemplate/schema.ts
+++ b/tests/spec/partialDefaultTemplate/schema.ts
@@ -197,7 +197,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/patch/expected.ts b/tests/spec/patch/expected.ts
index 3136096d..fd49a427 100644
--- a/tests/spec/patch/expected.ts
+++ b/tests/spec/patch/expected.ts
@@ -1946,7 +1946,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/patch/schema.ts b/tests/spec/patch/schema.ts
index 3136096d..fd49a427 100644
--- a/tests/spec/patch/schema.ts
+++ b/tests/spec/patch/schema.ts
@@ -1946,7 +1946,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/responses/expected.ts b/tests/spec/responses/expected.ts
index b8ed658f..d8cb1e97 100644
--- a/tests/spec/responses/expected.ts
+++ b/tests/spec/responses/expected.ts
@@ -229,7 +229,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/responses/schema.ts b/tests/spec/responses/schema.ts
index b8ed658f..d8cb1e97 100644
--- a/tests/spec/responses/schema.ts
+++ b/tests/spec/responses/schema.ts
@@ -229,7 +229,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/singleHttpClient/expected.ts b/tests/spec/singleHttpClient/expected.ts
index 9473c156..50362b5e 100644
--- a/tests/spec/singleHttpClient/expected.ts
+++ b/tests/spec/singleHttpClient/expected.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/singleHttpClient/schema.ts b/tests/spec/singleHttpClient/schema.ts
index 9473c156..50362b5e 100644
--- a/tests/spec/singleHttpClient/schema.ts
+++ b/tests/spec/singleHttpClient/schema.ts
@@ -189,7 +189,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/sortTypes-false/expected.ts b/tests/spec/sortTypes-false/expected.ts
index 029b2db0..0bfe0161 100644
--- a/tests/spec/sortTypes-false/expected.ts
+++ b/tests/spec/sortTypes-false/expected.ts
@@ -1946,7 +1946,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/sortTypes-false/schema.ts b/tests/spec/sortTypes-false/schema.ts
index 029b2db0..0bfe0161 100644
--- a/tests/spec/sortTypes-false/schema.ts
+++ b/tests/spec/sortTypes-false/schema.ts
@@ -1946,7 +1946,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/sortTypes/expected.ts b/tests/spec/sortTypes/expected.ts
index 0cfd055e..4587ef32 100644
--- a/tests/spec/sortTypes/expected.ts
+++ b/tests/spec/sortTypes/expected.ts
@@ -1946,7 +1946,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/sortTypes/schema.ts b/tests/spec/sortTypes/schema.ts
index 0cfd055e..4587ef32 100644
--- a/tests/spec/sortTypes/schema.ts
+++ b/tests/spec/sortTypes/schema.ts
@@ -1946,7 +1946,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/templates/expected.ts b/tests/spec/templates/expected.ts
index b2ff6fb2..06022066 100644
--- a/tests/spec/templates/expected.ts
+++ b/tests/spec/templates/expected.ts
@@ -2095,7 +2095,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/templates/schema.ts b/tests/spec/templates/schema.ts
index b2ff6fb2..06022066 100644
--- a/tests/spec/templates/schema.ts
+++ b/tests/spec/templates/schema.ts
@@ -2095,7 +2095,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/typeSuffixPrefix/expected.ts b/tests/spec/typeSuffixPrefix/expected.ts
index f27af6ec..01f6f8d8 100644
--- a/tests/spec/typeSuffixPrefix/expected.ts
+++ b/tests/spec/typeSuffixPrefix/expected.ts
@@ -1946,7 +1946,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/typeSuffixPrefix/schema.ts b/tests/spec/typeSuffixPrefix/schema.ts
index f27af6ec..01f6f8d8 100644
--- a/tests/spec/typeSuffixPrefix/schema.ts
+++ b/tests/spec/typeSuffixPrefix/schema.ts
@@ -1946,7 +1946,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/unionEnums/expected.ts b/tests/spec/unionEnums/expected.ts
index 55bfc0a2..d0b750f5 100644
--- a/tests/spec/unionEnums/expected.ts
+++ b/tests/spec/unionEnums/expected.ts
@@ -201,7 +201,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;
 
diff --git a/tests/spec/unionEnums/schema.ts b/tests/spec/unionEnums/schema.ts
index 55bfc0a2..d0b750f5 100644
--- a/tests/spec/unionEnums/schema.ts
+++ b/tests/spec/unionEnums/schema.ts
@@ -201,7 +201,7 @@ export class HttpClient<SecurityDataType = unknown> {
       signal: (cancelToken ? this.createAbortSignal(cancelToken) : requestParams.signal) || null,
       body: typeof body === "undefined" || body === null ? null : payloadFormatter(body),
     }).then(async (response) => {
-      const r = response as HttpResponse<T, E>;
+      const r = response.clone() as HttpResponse<T, E>;
       r.data = null as unknown as T;
       r.error = null as unknown as E;