Interface MetadataProvenanceExperimental

interface MetadataProvenance {
    detail?: string;
    method:
        | "unavailable"
        | "declared"
        | "inferred"
        | "observed"
        | "standard-default";
    observedAt?: string;
    protocol: SourceProtocol;
    source: string;
    validator?: | { kind: "etag"; value: string }
    | { kind: "last-modified"; value: string }
    | { kind: "version"; value: string };
}