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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 solve(self):
 """Call the solve method of the inner cbpdn object and return the result. """


        # Call solve method of inner cbpdn object
        Xi = self.cbpdn.solve()
        # Copy attributes from inner cbpdn object
        self.timer = self.cbpdn.timer
        self.itstat = self.cbpdn.itstat
        # Return result of inner cbpdn object
        return Xi