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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _next_record(self, next_line):
 """ Use loader to parse the record from the reader stream Supporting warc and arc records """

        record = self.loader.parse_record_stream(self.reader,
                                                 next_line,
                                                 self.known_format,
                                                 self.no_record_parse,
                                                 self.ensure_http_headers)

        self.member_info = None

        # Track known format for faster parsing of other records
        if not self.mixed_arc_warc:
            self.known_format = record.format

        return record