server: {
    mandatory: {
        BooleanState: Type<WithAlterations<BooleanState.Cluster, {
            events: {
                stateChange: {
                    optional: false;
                };
            };
        }>, typeof BooleanStateServer, {
            components: never[];
        }>;
        Identify: typeof IdentifyServer;
    };
    optional: {
        BooleanStateConfiguration: typeof BooleanStateConfigurationServer;
    };
} = ...

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