/**
  * @inheritdoc
  */
 protected function setUp()
 {
     $this->delegate = new DelegatingSourceProcessor();
     $this->processor1 = $this->getMockBuilder(SourceProcessorInterface::class)->getMockForAbstractClass();
     $this->processor2 = $this->getMockBuilder(SourceProcessorInterface::class)->getMockForAbstractClass();
     $this->delegate->registerProcessor($this->processor1);
     $this->delegate->registerProcessor($this->processor2);
 }