code: def _get_td_or_none(details, ID):
      
      content = details.find("tr", {"id": ID})
      content = _get_last_td(content)
  
      # if content is None, return it
      if not content:
          return None
  
      content = content.getContent().strip()
  
      # if content is blank string, return None
      if not content:
          return None
  
      return content
docs: Get <tr> tag with given `ID` and return content of the last <td> tag from
      <tr> root.
  
      Args:
          details (obj): :class:`dhtmlparser.HTMLElement` instance.
          ID (str): id property of the <tr> tag.
  
      Returns:
          str: Content of the last <td> as strign.