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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 set_calibration(self, delta: Point):
 """ Called by save calibration in order to update the offset on the object. """

        self._calibrated_offset = Point(x=self._offset.x + delta.x,
                                        y=self._offset.y + delta.y,
                                        z=self._offset.z + delta.z)
        self._wells = self._build_wells()