Update _3gpp-ns-nrm-sliceprofile.yang

  import _3gpp-common-yang-types { prefix types3gpp; }

  import _3gpp-5g-common-yang-types { prefix types5g3gpp; }

  import _3gpp-ns-nrm-perfreq { prefix perf3gpp; }

  organization "3GPP SA5";

  contact 

      uses types3gpp:PLMNId;

    }

    //Stage2 issue: The perfReq object does not have any proper definition 

    //              in 28.541 chapter 6.

    //Stage2 issue: The text that exists on the perfReq mentions an sST

    //              element. There is no sST element in SliceProfile which

    //              references perfReq, nor in perfReq itself. There are

    //              potentially several in the sNSSAIList. Should we take the

    //              union of those to control whivh perfReq elements are 

    //              relevant? For now, making all perfReq elements available

    //              in all slice profiles.

    list perfReq {

      description "The performance requirements for the NSI in terms of the 

        scenarios defined in the 3GPP TS 22.261, such as experienced data 

        rate, area traffic capacity (density) information of UE density.";

      key idx; //this list uses a grouping/choice and has no obvious key

      leaf idx { type uint32; }

      uses perf3gpp:PerfReqGrp;

    }

    leaf maxNumberofUEs {

      description "Specifies the maximum number of UEs may simultaneously 

        access the network slice instance.";