public function _createElements() {

        $this->_generateId();

        $this->setElements([
            $this->createFormElement('text', 'filetypes', $this->getLabel(), [
                'id' => $this->getAttribute('id'),
            ]),

            $this->createFormElement('static', 'browser', null,
                '<span data-filetypesbrowser="'.$this->getAttribute('id').'"></span>'),

            $this->createFormElement('static', 'descriptions', null,
                '<div data-filetypesdescriptions="'.$this->getAttribute('id').'"></div>')
        ]);
    }