code: def to_text(self):
          
          if self.items is None:
              return
          else:
              text = ''
              for i, item in enumerate(self.items):
                  text += ' %s. %s\n' % (i + 1, item.to_text())
  
              return text
docs: Render a Text MessageElement as plain text
  
          Args:
              None
  
          Returns:
              Str the plain text representation of the Text MessageElement
  
          Raises:
              Errors are propagated