Наследование: extends AbstractOperation
 /**
  * This corresponds to ${q(node).add([someOtherNode, ...]))}
  *
  * @test
  */
 public function addWithArrayArgumentAppendsToCurrentContext()
 {
     $object1 = new \stdClass();
     $object2 = new \stdClass();
     $flowQuery = new FlowQuery([$object1]);
     $arrayArgument = [$object2];
     $arguments = [$arrayArgument];
     $operation = new AddOperation();
     $operation->evaluate($flowQuery, $arguments);
     $this->assertSame([$object1, $object2], $flowQuery->getContext());
 }