Наследование: extends AbstractFilesExtractorQueryHandler
 /**
  * @test
  */
 public function itShouldReturnArrayComposerFilesResponse()
 {
     $files = FilesCommittedStub::createAllFiles();
     $composerFilesExtractorQueryHandler = new ComposerFilesExtractorQueryHandler(new ComposerFilesExtractor());
     $composerFilesResponse = $composerFilesExtractorQueryHandler->handle(new ComposerFilesExtractorQuery($files));
     $this->assertTrue($composerFilesResponse->isJsonFile());
     $this->assertTrue($composerFilesResponse->isLockFile());
 }