/**
  * @covers JsonContentHandler::makeEmptyContent
  */
 public function testMakeEmptyContent()
 {
     $handler = new JsonContentHandler();
     $content = $handler->makeEmptyContent();
     $this->assertInstanceOf(JsonContent::class, $content);
     $this->assertTrue($content->isValid());
 }
 public function __construct($modelId = 'Campaign')
 {
     parent::__construct($modelId);
 }