Variable server`Const`

server: {
    mandatory: {};
    optional: {
        Identify: typeof IdentifyServer;
        RefrigeratorAlarm: typeof RefrigeratorAlarmServer;
        RefrigeratorAndTemperatureControlledCabinetMode: typeof RefrigeratorAndTemperatureControlledCabinetModeServer;
    };
} = ...

An implementation for each server cluster supported by the endpoint per the Matter specification.