public function _before()
{
parent::_before();
$classes = ['error' => 'alert alert-error', 'success' => 'alert alert-success', 'notice' => 'alert alert-notice', 'warning' => 'alert alert-warning'];
$this->setClasses($classes);
}
public function _before()
{
parent::_before();
$classes = [];
$this->setClasses($classes);
}