code: def _operation_to_pooling_type(operation):
      """Takes in the operation string and returns the pooling type."""
      splitted_operation = operation.split("_")
      return splitted_operation[0]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow
label_desc: Use image node_id 11 for calling a global function with example usage: _operation_to_pooling_type(operation) and returns: splitted_operation