code: @Help(
      help =
          "Create the PhysicalNetworkFunctionDescriptor of a NetworkServiceDescriptor with specific id"
    )
    public PhysicalNetworkFunctionDescriptor createPhysicalNetworkFunctionDescriptor(
        final String idNsd, final PhysicalNetworkFunctionDescriptor physicalNetworkFunctionDescriptor)
        throws SDKException {
      String url = idNsd + "/pnfdescriptors";
      return (PhysicalNetworkFunctionDescriptor) requestPost(url, physicalNetworkFunctionDescriptor);
    }
docs: Create a new PhysicalNetworkFunctionDescriptor in a NetworkServiceDescriptor
  
  @param idNsd the NetworkServiceDescriptor's ID
  @param physicalNetworkFunctionDescriptor the new PhysicalNetworkFunctionDescriptor
  @return the created PhysicalNetworkFunctionDescriptor
  @throws SDKException if the request fails