Наследование: extends AbstractFilesExtractorQueryHandler, implements PhpGitHooks\Infrastructure\CommandBus\QueryBus\QueryHandlerInterface
 /**
  * @test
  */
 public function itShouldReturnJsonFilesResponse()
 {
     $files = FilesCommittedStub::createAllFiles();
     $jsonFilesExtractorQueryHandler = new JsonFilesExtractorQueryHandler(new JsonFilesExtractor());
     $jsonFilesResponse = $jsonFilesExtractorQueryHandler->handle(new JsonFilesExtractorQuery($files));
     $this->assertInstanceOf(JsonFilesResponse::class, $jsonFilesResponse);
     $this->assertSame(1, count($jsonFilesResponse->getFiles()));
 }