Example: [at]Flow\Validate("$image", type="\Neos\Media\Validator\ImageTypeValidator", options={ "allowedTypes"={"jpeg", "png"} })
Наследование: extends Neos\Flow\Validation\Validator\AbstractValidator
 /**
  * @test
  * @dataProvider validatorTestsDataProvider
  * @param array $options
  * @param string $actualMediaType
  * @param boolean $supposedToBeValid
  */
 public function validatorTests(array $options, $actualMediaType, $supposedToBeValid)
 {
     $image = $this->getMockBuilder(Image::class)->disableOriginalConstructor()->getMock();
     $image->expects($this->any())->method('getMediaType')->will($this->returnValue($actualMediaType));
     $validator = new ImageTypeValidator($options);
     $validationResult = $validator->validate($image);
     $this->assertEquals($supposedToBeValid, !$validationResult->hasErrors());
 }