Neos\ContentRepository\Eel\FlowQueryOperations\FilterOperation::evaluate PHP Метод

    public function evaluate(FlowQuery $flowQuery, array $arguments)
    {
        if (!isset($arguments[0]) || empty($arguments[0])) {
            return;
        }
        if ($arguments[0] instanceof NodeInterface) {
            $filteredContext = array();
            $context = $flowQuery->getContext();
            foreach ($context as $element) {
                if ($element === $arguments[0]) {
                    $filteredContext[] = $element;
                    break;
                }
            }
            $flowQuery->setContext($filteredContext);
        } else {
            parent::evaluate($flowQuery, $arguments);
        }
    }

 /**
  * @test
  */
 public function filterWithNodeInstanceIsSupported()
 {
     $node1 = $this->createMock(NodeInterface::class);
     $node2 = $this->createMock(NodeInterface::class);
     $context = array($node1, $node2);
     $q = new FlowQuery($context);
     $operation = new FilterOperation();
     $operation->evaluate($q, array($node2));
     $this->assertEquals(array($node2), $q->getContext());
 }