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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_parameter(self, index):
 """Returns the ValueElement corresponding to the parameter at the specified index."""

        result = None
        if index < len(self.paramorder):
            key = self.paramorder[index]
            if key in self._parameters:
                result = self._parameters[key]

        return result