class_docstr: Data Set Summary
class_docstr_tok: ["Data","Set","Summary"]
docstr: Returns dataset.
docstr_tok: ["Returns","dataset","."]
code: def data_summary(self):
      """Returns dataset."""
      return self._data_summary
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from typing import List, Tuple
  from xai.formatter.contents.base import Content
  from xai.formatter.writer.base import Writer
label_desc: Use image node_id 2 for calling the DataSetSummary obj's underlying member method code with example usage: obj.data_summary() and returns: self