docstr: Returns HTML Body Section Article 
code: def article(self):
      """Returns HTML Body Section Article"""
      return self._html_body_section_article
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import datetime
  from yattag import Doc, indent
label_desc: Use image node_id 8 for calling the CustomHtml obj's underlying member method code with example usage: obj.article() and returns: self