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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_effect(self) -> str: """Return the current color change program of the light."""

        effect_value = self.getCachedOrUpdatedValue("PROGRAM", channel=self._effect_channel)

        try:
            return self._light_effect_list[effect_value]
        except IndexError:
            LOG.error("Unexpected color effect returned by CCU")
            return "Unknown"