Update _3gpp-nr-nrm-ntnfunction.yang

        NR access.  This IOC contains instances of NTNTimeBasedConfig to support

        time-based configuration of the following NTN related entities:  

        EP_NgC, NRCellCU, NRCellDU, NRSectorCarrier, SectorEquipmentFunction, 

        and NRCellRelation.";

        and NRCellRelation.  The IP Configuration of the feeder links may be 

        configured via IP Autoconfiguration services [x] and/or configured via 

        instances of NTNTimeBasedConfig in anticipation of feeder link switchovers.";

      key id;

      max-elements 1;

      uses top3gpp:Top_Grp;