protected function createDatagridView(DatagridInterface $datagrid, array $vars = []) : DatagridView
 {
     $view = new DatagridView($datagrid);
     $view->vars = $vars;
     $view->init($datagrid);
     return $view;
 }
 protected function setUp()
 {
     $datagrid = $this->createDatagrid([$column = $this->createColumn()], [new Entity('entity1'), new Entity('entity2')]);
     $this->gridView = new DatagridView($datagrid);
     $this->gridView->init($datagrid);
 }