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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:
 async def set_power( self, power_type: str, power_parameters: typing.Mapping[str, typing.Any] = {}):
 """Set the power type and power parameters for this node."""

        data = await self._handler.update(
            system_id=self.system_id, power_type=power_type,
            power_parameters=power_parameters)
        self.power_type = data['power_type']