// Shape of the argument tensor.
  PartialTensorShape shape;

  // If the argument is a resource variable, the type and shape of the
  // variable's value.
  DataType handle_type = DT_INVALID;
  PartialTensorShape handle_shape;
};
typedef std::unordered_map<string, std::vector<InferredShape>> GraphShapeInfo;

// Infer shapes for all Tensors in a graph, and save them in a map.  The vector