public static function get_subtype_parent($type) {
        self::init();

        if (isset(self::$parents[$type])) {
            return self::$parents[$type];
        }

        return null;
    }
public static function get_subtype_parent($type) {
        self::init();

        if (isset(self::$parents[$type])) {
            return self::$parents[$type];
        }

        return null;
    }
public static function get_subtype_parent ( $ type ) { self :: init ( ) ; if ( isset ( self :: $ parents [ $ type ] ) ) { return self :: $ parents [ $ type ] ; } return null ; }
Returns parent of this subplugin type.

@param string $type
@return string parent component or null
Returns parent of this subplugin type .