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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 authenticate(self, *, scopes, **kwargs):
 """ Performs the oauth authentication flow resulting in a stored token It uses the credentials passed on instantiation :param list[str] scopes: list of protocol user scopes to be converted by the protocol or scope helpers :param kwargs: other configurations to be passed to the Connection instance :return: Success / Failure :rtype: bool """

        kwargs.setdefault('token_backend', self.con.token_backend)
        return oauth_authentication_flow(*self.con.auth, scopes=scopes,
                                         protocol=self.protocol, **kwargs)