easy_rec/python/utils/meta_graph_editor.py [846:889]:
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                                              lookup_input_values,
                                              lookup_input_shapes,
                                              lookup_input_weights)

    self.clear_meta_graph_embeding(self._meta_graph_def)

    self.clear_meta_collect(self._meta_graph_def)

    self.init_graph_node_clear_flags()

    self.remove_embedding_weights_and_update_lookup_outputs()

    # save/RestoreV2
    self.clear_save_restore()

    # save/Assign
    self.clear_save_assign()

    # save/SaveV2
    self.clear_save_v2()

    self.clear_initialize()

    self.clear_embedding_variable()

    self.drop_dependent_nodes()

    self._meta_graph_def.graph_def.ClearField('node')
    self._meta_graph_def.graph_def.node.extend([
        x for tid, x in enumerate(self._all_graph_nodes)
        if self._all_graph_node_flags[tid]
    ])

    logging.info('old node number = %d' % self._old_node_num)
    logging.info('node number = %d' % len(self._meta_graph_def.graph_def.node))

    if self._verbose:
      debug_dump_path = os.path.join(self._debug_dir, 'graph.txt')
      with GFile(debug_dump_path, 'w') as fout:
        fout.write(text_format.MessageToString(self.graph_def, as_utf8=True))
      debug_dump_path = os.path.join(self._debug_dir, 'meta_graph.txt')
      with GFile(debug_dump_path, 'w') as fout:
        fout.write(
            text_format.MessageToString(self._meta_graph_def, as_utf8=True))
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