code: @Help(
      help =
          "Update the PhysicalNetworkFunctionDescriptor of a NetworkServiceDescriptor with specific id"
    )
    public PhysicalNetworkFunctionDescriptor updatePNFD(
        final String idNsd,
        final String idPnf,
        final PhysicalNetworkFunctionDescriptor physicalNetworkFunctionDescriptor)
        throws SDKException {
      String url = idNsd + "/pnfdescriptors" + "/" + idPnf;
      return (PhysicalNetworkFunctionDescriptor) requestPut(url, physicalNetworkFunctionDescriptor);
    }
docs: Update a PhysicalNetworkFunctionDescriptor.
  
  @param idNsd the NetworkFunctionDescriptor's ID
  @param idPnf the PhysicalNetworkFunctionDescriptor's ID
  @param physicalNetworkFunctionDescriptor the updated version of the
  PhysicalNetworkFunctionDescriptor
  @return the updated PhysicalNetworkFunctionDescriptor
  @throws SDKException if the request fails