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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 match_function(self, args, kwargs, match_args=(), star_arg=None, kwd_args=(), dubstar_arg=None):
 """Matches a pattern-matching function."""

        self.match_in_args_kwargs(match_args, args, kwargs, allow_star_args=star_arg is not None)
        if star_arg is not None:
            self.match(star_arg, args + "[" + str(len(match_args)) + ":]")
        self.match_in_kwargs(kwd_args, kwargs)
        with self.down_a_level():
            if dubstar_arg is None:
                self.add_check("not " + kwargs)
            else:
                self.match(dubstar_arg, kwargs)