class_docstr: Represents a Node in a tree containing a layer.
  
  `LayerNode` is used to represent a tree of layers in a model. It contains
  config which describes the layer, and other input layers feeding into it.
  
  It is used as a generic class to represent both sets of layers which have
  been found in a model, and layers which should be replaced inside the model.
docstr: Ensure this works on Python2.
docstr_tok: ["Ensure","this","works","on","Python2","."]
code: def __ne__(self, other):
      """Ensure this works on Python2."""
      return not self.__eq__(other)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import abc
  import collections
  import six
label_desc: Use image node_id 5 for calling the LayerNode obj's underlying member method code with example usage: obj.__ne__(other) and returns: unknown