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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 simplify_scalar(self, func=sympy.simplify):
 """Simplify all scalar expressions within S, L and H Return a new :class:`SLH` object with the simplified expressions. See also: :meth:`.QuantumExpression.simplify_scalar` """

        return SLH(
            self.S.simplify_scalar(func=func),
            self.L.simplify_scalar(func=func),
            self.H.simplify_scalar(func=func))