server: {
    mandatory: {
        Identify: typeof IdentifyServer;
        OnOff: Type<WithFeatures<WithFeatures<OnOff.Cluster, readonly [Lighting]>, readonly ["DeadFrontBehavior"]>, typeof OnOffServer, OnOffInterface>;
        Thermostat: typeof ThermostatServer;
    };
    optional: {
        FanControl: typeof FanControlServer;
        Groups: typeof GroupsServer;
        RelativeHumidityMeasurement: typeof RelativeHumidityMeasurementServer;
        ScenesManagement: typeof ScenesManagementServer;
        TemperatureMeasurement: typeof TemperatureMeasurementServer;
        ThermostatUserInterfaceConfiguration: typeof ThermostatUserInterfaceConfigurationServer;
    };
} = ...

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