code: @Help(
      help =
          "Get the PhysicalNetworkFunctionDescriptor with specific id of a NetworkServiceDescriptor with specific id"
    )
    public PhysicalNetworkFunctionDescriptor getPhysicalNetworkFunctionDescriptor(
        final String idNsd, final String idPnf) throws SDKException {
      String url = idNsd + "/pnfdescriptors" + "/" + idPnf;
      return (PhysicalNetworkFunctionDescriptor)
          requestGetWithStatusAccepted(url, PhysicalNetworkFunctionDescriptor.class);
    }
docs: Returns a specific PhysicalNetworkFunctionDescriptor that is contained in a particular
  NetworkServiceDescriptor.
  
  @param idNsd the NetworkServiceDescriptr's ID
  @param idPnf the PhysicalNetworkFunctionDescriptor's ID
  @return the PhysicalNetworkFunctionDescriptor
  @throws SDKException if the request fails