class_docstr: Feature Importance
class_docstr_tok: ["Feature","Importance"]
docstr: Returns class id.
docstr_tok: ["Returns","class","id","."]
code: def class_id(self):
      """Returns class id."""
      return self._class_id
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from typing import List, Tuple
  import numpy
  from xai.formatter.contents.base import Content
  from xai.formatter.writer.base import Writer
label_desc: Use image node_id 4 for calling the FeatureShapValues obj's underlying member method code with example usage: obj.class_id() and returns: self