Overrides Table::getInfo
public function getInfo() { $info = parent::getInfo(); $info['#regions'] = [ '' => [], ]; $info['#theme'] = 'field_ui_table'; // Prepend FieldUiTable's prerender callbacks. array_unshift($info['#pre_render'], [ $this, 'tablePreRender', ], [ $this, 'preRenderRegionRows', ]); return $info; }