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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 get(self, *index):
 """ Get the instance with the specified index. Returns: The corresponding instance. """

        assert self.wrapFunction is not None
        if len(index) == 1 and isinstance(index[0], (tuple, list)):
            index = index[0]
        if len(index) == 0:
            return self.wrapFunction(self._impl.get())
        else:
            return self.wrapFunction(self._impl.get(Tuple(index)._impl))