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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 consistent_with(self, state):
 """ Indicate that the query should be consistent with one or more mutations. :param state: The state of the mutations it should be consistent with. :type state: :class:`~.couchbase.mutation_state.MutationState` """

        if self.consistency not in (UNBOUNDED, NOT_BOUNDED, 'at_plus'):
            raise TypeError(
                'consistent_with not valid with other consistency options')

        if not state:
            raise TypeError('Passed empty or invalid state', state)
        self.consistency = 'at_plus'
        self._body['scan_vectors'] = state._sv