fix code style

Author: xabbuh

Response/TraceableResponse.php

@@ -83,6 +83,7 @@ public function getContent(bool $throw = true): string
             if (false === $this->content) {
                 return $this->response->getContent($throw);
             }
+
             return $this->content = $this->response->getContent(false);
         } finally {
             if ($this->event && $this->event->isStarted()) {
@@ -100,6 +101,7 @@ public function toArray(bool $throw = true): array
             if (false === $this->content) {
                 return $this->response->toArray($throw);
             }
+
             return $this->content = $this->response->toArray(false);
         } finally {
             if ($this->event && $this->event->isStarted()) {

Tests/Response/MockResponseTest.php

@@ -33,7 +33,7 @@ public function testToArrayError($content, $responseHeaders, $message)
         $response->toArray();
     }
 
-    public function testUrlHttpMethodMockResponse(): void
+    public function testUrlHttpMethodMockResponse()
     {
         $responseMock = new MockResponse(json_encode(['foo' => 'bar']));
         $url = 'https://example.com/some-endpoint';