code: def _types_dict():
      return {
          "AllValuesQuantizer": AllValuesQuantizer,
          "LastValueQuantizer": LastValueQuantizer,
          "MovingAverageQuantizer": MovingAverageQuantizer,
          "FixedQuantizer": FixedQuantizer,
          "NoQuantizer": NoQuantizer,
      }
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import abc
  import six
  import tensorflow
  from tensorflow_model_optimization.python.core.quantization.keras import quant_ops
label_desc: Use image node_id 1 for calling a global function with example usage: _types_dict() and returns: dict