code: def EraseGrad(op, dmap):
      key_grad = None
      map_grad = dmap
      return map_grad, key_grad
  
file_path: tensorflow/tensorflow/python/ops/map_ops.py
imports: from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import cond
  from tensorflow.python.ops import gen_map_ops
  from tensorflow.python.ops.gen_map_ops import *
label_desc: Use image node_id 10 for calling a global function with example usage: EraseGrad(op, dmap) and returns: map_grad,  key_grad