private function setFileAction()
    {
        array_push($this->actions, 'file');

        $this->addForm = array_diff($this->addForm, ['files']);
        $this->editForm = array_diff($this->addForm, ['files']);

        $this->setModelDefaults('files', []);
        $this->setColumnFormat('files', 'files');

        return $this;
    }