Return the (unprocessed) string from the string table at index `idx`.

        :param int idx: the index in the string section

def get_raw_string(self, idx):
        """
        Return the (unprocessed) string from the string table at index `idx`.

        :param int idx: the index in the string section
        """
        try:
            off = self.__manage_item[TypeMapItem.STRING_ID_ITEM][idx].get_string_data_off()
        except IndexError:
            log.warning("unknown string item @ %d" % idx)
            return "AG:IS: invalid string"

        try:
            return self.__strings_off[off].get()
        except KeyError:
            log.warning("unknown string item @ 0x%x(%d)" % (off, idx))
            return "AG:IS: invalid string"