diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/v1/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/v1/_metadata.json
index 0fde66cae7..83970d1cfe 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/v1/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/v1/_metadata.json
@@ -95,8 +95,8 @@
         "operation_group_one": "OperationGroupOneOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/v3/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/v3/_metadata.json
index 5f505a520c..359498e32b 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/v3/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/v3/_metadata.json
@@ -96,8 +96,8 @@
         "operation_group_two": "OperationGroupTwoOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/v1/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/v1/_metadata.json
index 95778b846a..e0f1d90879 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/v1/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/v1/_metadata.json
@@ -95,8 +95,8 @@
         "operation_group_one": "OperationGroupOneOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/v3/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/v3/_metadata.json
index 7a34f154b4..436ac1a965 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/v3/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/v3/_metadata.json
@@ -96,8 +96,8 @@
         "operation_group_two": "OperationGroupTwoOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/v1/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/v1/_metadata.json
index 6afc2663b2..3c61b609e8 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/v1/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/v1/_metadata.json
@@ -95,8 +95,8 @@
         "operation_group_one": "OperationGroupOneOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/v3/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/v3/_metadata.json
index 70a84e3a7b..3e0f12a2ab 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/v3/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/v3/_metadata.json
@@ -96,8 +96,8 @@
         "operation_group_two": "OperationGroupTwoOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/v1/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/v1/_metadata.json
index cb47fa5048..3edaf13132 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/v1/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/v1/_metadata.json
@@ -95,8 +95,8 @@
         "operation_group_one": "OperationGroupOneOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/v3/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/v3/_metadata.json
index 89a87306b0..93cada4e40 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/v3/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/v3/_metadata.json
@@ -96,8 +96,8 @@
         "operation_group_two": "OperationGroupTwoOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/v1/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/v1/_metadata.json
index 23c84d4776..23fedc1182 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/v1/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/v1/_metadata.json
@@ -95,8 +95,8 @@
         "operation_group_one": "OperationGroupOneOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/v3/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/v3/_metadata.json
index ca1ede8bb1..4c4a1de399 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/v3/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/v3/_metadata.json
@@ -96,8 +96,8 @@
         "operation_group_two": "OperationGroupTwoOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiSecurity/multiapisecurity/v1/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiSecurity/multiapisecurity/v1/_metadata.json
index 2afa2ae0f4..0e6aee3931 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiSecurity/multiapisecurity/v1/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiSecurity/multiapisecurity/v1/_metadata.json
@@ -95,8 +95,8 @@
         "operation_group_one": "OperationGroupOneOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/__init__.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/__init__.py
index e69de29bb2..d55ccad1f5 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/__init__.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/__init__.py
@@ -0,0 +1 @@
+__path__ = __import__("pkgutil").extend_path(__path__, __name__)  # type: ignore
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/v1/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/v1/_metadata.json
index 1d15d3d639..9c6ece6678 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/v1/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/v1/_metadata.json
@@ -95,8 +95,8 @@
         "operation_group_one": "OperationGroupOneOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/v3/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/v3/_metadata.json
index d3520011b2..bf467aa3b6 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/v3/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/v3/_metadata.json
@@ -96,8 +96,8 @@
         "operation_group_two": "OperationGroupTwoOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/v1/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/v1/_metadata.json
index ff69f821a3..9211daf25c 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/v1/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/v1/_metadata.json
@@ -95,8 +95,8 @@
         "operation_group_one": "OperationGroupOneOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"IO\", \"Iterator\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"LROPoller\"], \"azure.core.paging\": [\"ItemPaged\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"stdlib\": {\"typing\": [\"AsyncIterator\", \"IO\", \"Optional\", \"Union\"], \"io\": [\"IOBase\"]}, \"sdkcore\": {\"azure.core.polling\": [\"AsyncLROPoller\"], \"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/v3/_metadata.json b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/v3/_metadata.json
index abe34802c8..b580ceaa54 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/v3/_metadata.json
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/v3/_metadata.json
@@ -96,8 +96,8 @@
         "operation_group_two": "OperationGroupTwoOperations"
     },
     "operation_mixins": {
-        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"local\": {\".\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
-        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"local\": {\"..\": [[\"models\", \"_models\"]]}, \"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}}}",
+        "sync_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"Iterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.paging\": [\"ItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\".\": [[\"models\", \"_models\"]]}}}",
+        "async_imports": "{\"conditional\": {\"stdlib\": {\"typing\": [\"Any\", \"AsyncIterable\"]}}, \"regular\": {\"sdkcore\": {\"azure.core.async_paging\": [\"AsyncItemPaged\"]}, \"stdlib\": {\"typing\": [\"Optional\"]}, \"local\": {\"..\": [[\"models\", \"_models\"]]}}}",
         "sync_mixin_typing_definitions": "",
         "async_mixin_typing_definitions": "",
         "operations": {