/**
  * @param string $methodName
  * @param string $path
  * @param array|NULL $parameters
  * @param array|NULL $content
  * @return void
  */
 private function mockPerformCall($methodName, $path, array $parameters = NULL, array $content = NULL)
 {
     $expectedRestrictions = $this->getExpectedRestrictions($parameters, $content);
     $this->api->shouldReceive($methodName)->with($path, equalTo($expectedRestrictions))->once();
 }