code: def Add(shapeA, shapeB, axis=None, broadcast=None):
      # do not deal
      return shapeA
  
file_path: MMdnn/mmdnn/conversion/onnx/shape_inference.py
label_desc: Use image node_id 1 for calling a global function with example usage: Add(shapeA, shapeB, axis, broadcast) and returns: shapeA