Type Alias MetadataClients<T>

MetadataClients: {
    readonly [K in DomainClientName<T>]: T[K] extends infer C
        ? C extends { withMetadata(): R } ? R : undefined
        : never
}

T's domain clients, each as its withMetadata() view: every method that answers once resolves { data, meta }. A domain T may not hold (a CustomEsiClient built without it) is undefined.