code: @Help(
      help =
          "Get a specific VirtualNetworkFunctionDescriptor of a particular NetworkServiceDescriptor specified by their IDs"
    )
    @Deprecated
    public VirtualNetworkFunctionDescriptor getVirtualNetworkFunctionDescriptor(
        final String idNSD, final String idVfn) throws SDKException {
      String url = idNSD + "/vnfdescriptors" + "/" + idVfn;
      return (VirtualNetworkFunctionDescriptor)
          requestGet(url, VirtualNetworkFunctionDescriptor.class);
    }
docs: Return a VirtualNetworkFunctionDescriptor that is contained in a particular
  NetworkServiceDescriptor.
  
  @param idNSD the ID of the NetworkServiceDescriptor
  @param idVfn the id of the VirtualNetworkFunctionDescriptor
  @return the VirtualNetworkFunctionDescriptor
  @throws SDKException if the request fails