classes/Facade.php
public static function instance($instance = null)
	{
		$class = get_called_class();

		if (static::exists($instance))
		{
			$instance = static::$_instances[$class][$instance];
		}
		else
		{
			$instance = false;
		}

		return $instance;
	}
public static function instance($instance = null)
	{
		$class = get_called_class();

		if (static::exists($instance))
		{
			$instance = static::$_instances[$class][$instance];
		}
		else
		{
			$instance = false;
		}

		return $instance;
	}
public static function instance ( $ instance = null ) { $ class = get_called_class ( ) ; if ( static :: exists ( $ instance ) ) { $ instance = static :: $ _instances [ $ class ] [ $ instance ] ; } else { $ instance = false ; } return $ instance ; }
Return an instance or false

@param  string $instance
@return mixed
Return an instance or false