def _parse_key(stream):
logger.debug("<STR_LIT>")<EOL>key = stream.advance_past_chars(["<STR_LIT:=>"])<EOL>logger.debug("<STR_LIT>")<EOL>logger.debug("<STR_LIT:%s>", fmt_green(key))<EOL>return key<EOL>
Parse key, value combination
    returns :
        Parsed key (string)