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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 _get_synonym(self, line):
 """Given line, return optional attribute synonym value in a namedtuple. Example synonym and its storage in a namedtuple: synonym: "The other white meat" EXACT MARKETING_SLOGAN [MEAT:00324, BACONBASE:03021] text: "The other white meat" scope: EXACT typename: MARKETING_SLOGAN dbxrefs: set(["MEAT:00324", "BACONBASE:03021"]) Example synonyms: "peptidase inhibitor complex" EXACT [GOC:bf, GOC:pr] "regulation of postsynaptic cytosolic calcium levels" EXACT syngo_official_label [] "tocopherol 13-hydroxylase activity" EXACT systematic_synonym [] """

        mtch = self.attr2cmp['synonym'].match(line)
        text, scope, typename, dbxrefs, _ = mtch.groups()
        typename = typename.strip()
        dbxrefs = set(dbxrefs.split(', ')) if dbxrefs else set()
        return self.attr2cmp['synonym nt']._make([text, scope, typename, dbxrefs])