code: def shortcut(data_in, data_residual, prefix):
      out = mx.sym.elemwise_add(
          data_in, data_residual, name="%s-shortcut" % prefix
      )
      return out
  
file_path: byteps/example/mxnet/symbols/mobilenetv2.py
imports: import mxnet
label_desc: Use image node_id 2 for calling a global function with example usage: shortcut(data_in, data_residual, prefix) and returns: out