ConstReadonlyattributes: { ReadonlyselectedIndicates the index into the list of SupportedWatts of the currently selected power setting.
The index shall be a valid index into the SupportedWatts list.
ReadonlysupportedIndicates the list of power levels (in W) supported by the server.
A MicrowaveOvenControlCluster supports these elements if it supports feature PowerInWatts.