text:   /** Support at least "name" for UIs. */
    oyCMMGetText_f       getText;
    const char        ** texts;          /**< zero terminated list for getText */
  
    char               * connector_type; /**< a @ref registration string */
    /** Check if two oyCMMapi7_s filter connectors of type oyConnector_s can 
     *  match each other inside a given socket and a plug. */
    oyCMMFilterSocket_MatchPlug_f  filterSocket_MatchPlug;
  
    /** make requests and receive data, by part of oyFilterPlug_s */
    int                  is_plug;
  