Print grouped and sorted GO IDs.

def _prt_txt_desc2nts(self, prt, desc2nts, prtfmt=None):
        """Print grouped and sorted GO IDs."""
        if prtfmt is None:
            prtfmt = self.get_prtfmt("fmta")
        if self.ver_list is not None:
            prt.write("# Versions:\n#    {VER}\n".format(VER="\n#    ".join(self.ver_list)))
        self.prt_txt_desc2nts(prt, desc2nts, prtfmt)