code: def _format_generic(lines, element, printed, spacer=""):
      
      for doc in element.docstring:
          if doc.doctype.lower() not in printed:
              lines.append(spacer + doc.__str__())
docs: Generically formats all remaining docstrings and custom XML
      tags that don't appear in the list of already printed documentation.
  
      :arg printed: a list of XML tags for the element that have already
        been handled by a higher method.