final public static function instance() {
        $c = get_called_class();
       
        if( ! isset( self::$instances[$c] ) )
        {
            self::$instances[$c] = new $c;
        }
       
        return self::$instances[$c];
    }
final public static function instance() {
        $c = get_called_class();
       
        if( ! isset( self::$instances[$c] ) )
        {
            self::$instances[$c] = new $c;
        }
       
        return self::$instances[$c];
    }
final public static function instance ( ) { $ c = get_called_class ( ) ; if ( ! isset ( self :: $ instances [ $ c ] ) ) { self :: $ instances [ $ c ] = new $ c ; } return self :: $ instances [ $ c ] ; }
Grab an instance of the singleton.

@return self
Grab an instance of the singleton .