Variable server`Const`

server: {
    mandatory: {
        BridgedDeviceBasicInformation: typeof BridgedDeviceBasicInformationServer;
        Index: typeof IndexBehavior;
        Parts: typeof PartsBehavior;
    };
    optional: {
        PowerSource: typeof PowerSourceServer;
        PowerSourceConfiguration: typeof PowerSourceConfigurationServer;
    };
} = ...

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