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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 normalise(self, to_currency):
 """Normalise this balance into a single currency Args: to_currency (str):
 Destination currency Returns: (Balance):
 A new balance object containing a single Money value in the specified currency """

        out = Money(currency=to_currency)
        for money in self._money_obs:
            out += converter.convert(money, to_currency)
        return Balance([out])