code: def _get_out_tensor_name(tensor_name, output_index):
      return tensor_name + ":" + str(output_index)
  
file_path: delta/delta/data/feat/speech_feature.py
imports: import os
  import numpy
  import delta.compat
  from absl import logging
  from delta.data.feat import speech_ops
  from core.ops import py_x_ops
  from delta.data.feat import python_speech_features
label_desc: Use image node_id 2 for calling a global function with example usage: _get_out_tensor_name(tensor_name, output_index) and returns: unknown