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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 _reverse_rounding_method(method):
 """ Reverse meaning of ``method`` between positive and negative. """

        if method is RoundingMethods.ROUND_UP:
            return RoundingMethods.ROUND_DOWN
        if method is RoundingMethods.ROUND_DOWN:
            return RoundingMethods.ROUND_UP
        if method is RoundingMethods.ROUND_HALF_UP:
            return RoundingMethods.ROUND_HALF_DOWN
        if method is RoundingMethods.ROUND_HALF_DOWN:
            return RoundingMethods.ROUND_HALF_UP
        if method in \
           (RoundingMethods.ROUND_TO_ZERO, RoundingMethods.ROUND_HALF_ZERO):
            return method
        raise BasesAssertError('unknown method')