message: Handle StatelessWhile in OpHint.
diff: @@ -854,7 +854,7 @@ def _find_children_hints(call, graph_def):
  if n in reachable_by_output:
  if n not in reachable_by_input and n not in output_nodes_set:
  # special handle for while loop function def.
  - if node.op == "While":
  + if node.op == "While" or node.op == "StatelessWhile":
  body_name = node.attr["body"].func.name
  inputs_outside_loop = node.input
  for function_def in graph_def.library.function:
  