Confdc support for yangmnt:mount-point

is there a way to use yangmnt:mount-point , getting below error while trying to compile a yang with yangmnt:mount-point using confdc

error: undefined prefix yangmnt

  augment "/agg:aggregated-o-ru/agg:aggregation" {
    container module-cap-model {
      yangmnt:mount-point "module-cap-root" {
          "Root for o-ran-module-cap.yang model supported per O-RU instance";

I believe that RFC 8528 is currently not supported by ConfD.

List of supported RFCs is shown in ConfD user guide, chapter “The NETCONF server / Introduction” (chapter 19.1 as of ConfD 7.6).