Parses a textgroup from a cts file

        :param cts_file: Path to the CTS File
        :type cts_file: str
        :return: CtsTextgroupMetadata and Current file

def _parse_textgroup(self, cts_file):
        """ Parses a textgroup from a cts file

        :param cts_file: Path to the CTS File
        :type cts_file: str
        :return: CtsTextgroupMetadata and Current file
        """
        with io.open(cts_file) as __xml__:
            return self.classes["textgroup"].parse(
                resource=__xml__
            ), cts_file