docs: def reformat_to_pretty_xml(doc_xml):
      """Pretty print XML doc.
  
      Args:
        doc_xml : str
          Well formed XML doc
  
      Returns:
        str: Pretty printed XML doc
  
      """
      assert isinstance(doc_xml, str)
      dom_obj = xml.dom.minidom.parseString(doc_xml)
      pretty_xml = dom_obj.toprettyxml(indent='  ')
      # Remove empty lines in the result caused by a bug in toprettyxml()
      return re.sub(r'^\s*$\n', r'', pretty_xml, flags=re.MULTILINE)