Plum\Plum\WorkflowTest::addFilterWithFieldConvertsCallbackIntoCallbackConverter PHP Метод

    public function addFilterWithFieldConvertsCallbackIntoCallbackConverter()
    {
        $this->workflow->addFilter(['filter' => function ($item) {
            return $item;
        }, 'field' => ['foo']]);
        $this->assertInstanceOf('Plum\\Plum\\Filter\\FilterInterface', $this->workflow->getFilters()[0]->getFilter());
    }