message: [TF:TRT] TrtGraphConverterV2.convert returns converted graph function.
diff: @@ -1135,6 +1135,7 @@ class TrtGraphConverterV2(object):
  self._converted_func = self._rebuild_func(self._converted_func)
  self._converted = True
  + return self._converted_func
  def build(self, input_fn):
  """Run inference with converted graph in order to build TensorRT engines.
  