Наследование: implements Bruli\EventBusBundle\CommandBus\CommandHandlerInterface
 /**
  * @test
  */
 public function itShouldWriteData()
 {
     $content = StubCreator::faker()->text();
     $this->shouldWriteData($content);
     $commandHandler = new GitIgnoreWriterCommandHandler(new GitIgnoreWriter($this->getWriter()));
     $commandHandler->handle(new GitIgnoreWriterCommand($content));
 }