diff --git a/src/GooglePlay/AbstractResponse.php b/src/GooglePlay/AbstractResponse.php
index 5af53b0..a7e1c9c 100644
--- a/src/GooglePlay/AbstractResponse.php
+++ b/src/GooglePlay/AbstractResponse.php
@@ -8,15 +8,15 @@
  */
 abstract class AbstractResponse
 {
-  const CONSUMPTION_STATE_YET_TO_BE_CONSUMED = 0;
-  const CONSUMPTION_STATE_CONSUMED = 1;
-  const PURCHASE_STATE_PURCHASED = 0;
-  const PURCHASE_STATE_CANCELED = 1;
+    const CONSUMPTION_STATE_YET_TO_BE_CONSUMED = 0;
+    const CONSUMPTION_STATE_CONSUMED = 1;
+    const PURCHASE_STATE_PURCHASED = 0;
+    const PURCHASE_STATE_CANCELED = 1;
 
-  /**
-   * @var \Google_Service_AndroidPublisher_ProductPurchase|\Google_Service_AndroidPublisher_SubscriptionPurchase
-   */
-  protected $response;
+    /**
+     * @var \Google_Service_AndroidPublisher_ProductPurchase|\Google_Service_AndroidPublisher_SubscriptionPurchase
+     */
+    protected $response;
 
     /**
      * Constructor
@@ -29,7 +29,6 @@ public function __construct($response)
     }
 
     /**
-
      * @return array|string
      */
     public function getDeveloperPayload()
@@ -46,8 +45,8 @@ public function getKind()
     }
 
     /**
-    * @return \Google_Service_AndroidPublisher_ProductPurchase|\Google_Service_AndroidPublisher_SubscriptionPurchase
-    */
+     * @return \Google_Service_AndroidPublisher_ProductPurchase|\Google_Service_AndroidPublisher_SubscriptionPurchase
+     */
     public function getRawResponse()
     {
         return $this->response;
diff --git a/src/GooglePlay/PurchaseResponse.php b/src/GooglePlay/PurchaseResponse.php
index 1b0b303..b6f9386 100644
--- a/src/GooglePlay/PurchaseResponse.php
+++ b/src/GooglePlay/PurchaseResponse.php
@@ -8,12 +8,12 @@
  */
 class PurchaseResponse extends AbstractResponse
 {
-  /**
-   * @var \Google_Service_AndroidPublisher_ProductPurchase
-   */
-  protected $response;
+    /**
+     * @var \Google_Service_AndroidPublisher_ProductPurchase
+     */
+    protected $response;
 
-    protected $developerPayload = array();
+    protected $developerPayload = [];
 
     public function __construct($response)
     {
@@ -27,13 +27,17 @@ public function __construct($response)
     public function getConsumptionState()
     {
         return $this->response->consumptionState;
-    }/**
+    }
+
+    /**
      * @return string
      */
     public function getPurchaseTimeMillis()
     {
         return $this->response->purchaseTimeMillis;
-    }public function getDeveloperPayload()
+    }
+
+    public function getDeveloperPayload()
     {
         return $this->developerPayload;
     }
diff --git a/src/GooglePlay/SubscriptionResponse.php b/src/GooglePlay/SubscriptionResponse.php
index dcc065f..9ebf263 100644
--- a/src/GooglePlay/SubscriptionResponse.php
+++ b/src/GooglePlay/SubscriptionResponse.php
@@ -8,57 +8,57 @@
  */
 class SubscriptionResponse extends AbstractResponse
 {
-  /**
-   * @var \Google_Service_AndroidPublisher_SubscriptionPurchase
-   */
-  protected $response;
+    /**
+     * @var \Google_Service_AndroidPublisher_SubscriptionPurchase
+     */
+    protected $response;
 
-  /**
-   * @return bool
-   */
-  public function getAutoRenewing()
-  {
-    return (bool)$this->response->getAutoRenewing();
-  }
+    /**
+     * @return bool
+     */
+    public function getAutoRenewing()
+    {
+        return (bool)$this->response->getAutoRenewing();
+    }
 
-  /**
-   * @return integer|null
-   */
-  public function getCancelReason()
-  {
-    return $this->response->getCancelReason();
-  }
+    /**
+     * @return integer|null
+     */
+    public function getCancelReason()
+    {
+        return $this->response->getCancelReason();
+    }
 
-  /**
-   * @return string
-   */
-  public function getCountryCode()
-  {
-    return $this->response->getCountryCode();
-  }
+    /**
+     * @return string
+     */
+    public function getCountryCode()
+    {
+        return $this->response->getCountryCode();
+    }
 
-  /**
-   * @return integer
-   */
-  public function getPriceAmountMicros()
-  {
-    return $this->response->getPriceAmountMicros();
-  }
+    /**
+     * @return integer
+     */
+    public function getPriceAmountMicros()
+    {
+        return $this->response->getPriceAmountMicros();
+    }
 
-  /**
-   * @return string
-   */
-  public function getPriceCurrencyCode()
-  {
-    return $this->response->getPriceCurrencyCode();
-  }
+    /**
+     * @return string
+     */
+    public function getPriceCurrencyCode()
+    {
+        return $this->response->getPriceCurrencyCode();
+    }
 
-  /**
-   * @return string
-   */
-  public function getStartTimeMillis()
-  {
-    return $this->response->getStartTimeMillis();
+    /**
+     * @return string
+     */
+    public function getStartTimeMillis()
+    {
+        return $this->response->getStartTimeMillis();
     }
 
     /**
@@ -83,13 +83,13 @@ public function getUserCancellationTimeMillis()
     public function getPaymentState()
     {
         return $this->response->getPaymentState();
-  }
+    }
 
-  /**
-   * @return string
-   */
-  public function getExpiresDate()
-  {
-    return $this->response->expiryTimeMillis;
-  }
+    /**
+     * @return string
+     */
+    public function getExpiresDate()
+    {
+        return $this->response->expiryTimeMillis;
+    }
 }