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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 adjustPhase(self, adjustment):
 """ Adjust the accelerating phase of the cavity by the value of ``adjustment``. The adjustment is additive, so a value of ``scalingFactor = 0.0`` will result in no change of the phase. """

        self.phase = self.phase._replace(val = self.phase.val + adjustment)