public function testListApiKeysReturnsCorrectData()
 {
     $this->setMockResponse($this->client, array('api-keys/listApiKeys'));
     $apiKeys = $this->client->getApiKeys();
     $this->assertInstanceOf('\\Mgrt\\Model\\ResultCollection', $apiKeys);
     $this->assertEquals($apiKeys->count(), 2);
     foreach ($apiKeys as $apiKey) {
         $this->assertInstanceOf('\\Mgrt\\Model\\ApiKey', $apiKey);
     }
 }