class_docstr: Helper class for ParameterEncoding.
  
  Initializes variables by calling base initializer, then encoding.
code: def __init__(self, base_initializer, parameter_encoding):
      self._base_initializer = base_initializer
      self._parameter_encoding = parameter_encoding
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow.compat.v1
  from tensorflow.python.framework import function
label_desc: Use image node_id 1 to create a new _EncodingInitializer object from inherited base classes: object with example: obj = _EncodingInitializer(base_initializer, parameter_encoding)