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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 parse_note(cls, note):
 """Parse string annotation into object reference with optional name."""

        if isinstance(note, tuple):
            if len(note) != 2:
                raise ValueError('tuple annotations must be length 2')
            return note
        try:
            match = cls.re_note.match(note)
        except TypeError:
            # Note is not a string. Support any Python object as a note.
            return note, None
        return match.groups()