/**
  * {@inheritdoc}
  *
  * @param array                       $responseData
  * @param ChannelsJoinPayloadResponse $payloadResponse
  */
 protected function assertResponse(array $responseData, PayloadResponseInterface $payloadResponse)
 {
     $this->assertChannel($responseData['channel'], $payloadResponse->getChannel());
     $this->assertEquals($responseData['already_in_channel'], $payloadResponse->isAlreadyInChannel());
 }