docs: def _end_comment_type_from_line(line):
      """Return the "comment footer" (eg ' */'').
  
      This header goes after the content of a start of the
      line in a replacement that would be at the end of a header block.
      """
      regex = re.compile(r"^{0}".format(_FTR_COMMENT))
      match = regex.match(line)
      if match:
          return " */"
  
      return ""