ConstReadonlyattributes: { Readonlyforecast: Attribute<TypeFromFields | null, any>This attribute allows an ESA to share its intended forecast with a client (such as an Energy Management System).
A null value indicates that there is no forecast currently available
yet been selected by the user).
A server may reset this value attribute to null on a reboot, and it does not need to persist any previous forecasts.
A DeviceEnergyManagementCluster supports these elements if it supports features PowerForecastReporting or StateForecastReporting.