public static function register($defaultDateFormat = 'd/m/Y')
	{
		Container::extensionMethod('addDatePicker', function (Container $container, $name, $label = NULL)
			use ($defaultDateFormat)
		{
			$control = $container[$name] = new DatePicker($label);
			$control->setDateFormat($defaultDateFormat);

			return $control;
		});
	}