Variable Message

Message: Readonly<
    {
        create: (
            a: unknown,
        ) => Result<
            Readonly<
                {
                    authority: string
                    | null;
                    body: Body;
                    fields: readonly Readonly<
                        {
                            name: string;
                            provenance: "caller"
                            | "http1"
                            | "http2"
                            | "http3";
                            section: "headers" | "trailers";
                            value: Uint8Array;
                        },
                    >[];
                    kind: "request"
                    | "response";
                    method: string | null;
                    rawTarget: string | null;
                    relatedRequest:
                        | (
                            Readonly<{ kind: "request" | "response"; method: string | null; rawTarget: string | null; targetForm: "origin" | "absolute" | "authority" | "asterisk" | null; scheme: string | null; authority: string | null; ... 5 more ...; transport: Readonly<...>; }>
                        )
                        | null;
                    scheme: string
                    | null;
                    status: number | null;
                    targetForm: "origin" | "absolute" | "authority" | "asterisk" | null;
                    trailers:
                        | "unavailable"
                        | readonly Readonly<
                            {
                                name: string;
                                provenance: (...)
                                | (...)
                                | (...)
                                | (...);
                                section: (...) | (...);
                                value: Uint8Array;
                            },
                        >[]
                        | "pending";
                    transport: TransportFacts;
                },
            >,
        >;
        request: (
            method: unknown,
            target: unknown,
            fields: unknown,
            bytes: unknown,
            options?: unknown,
        ) => Promise<
            Result<
                Readonly<
                    {
                        authority: string
                        | null;
                        body: Body;
                        fields: readonly Readonly<
                            {
                                name: string;
                                provenance: (...)
                                | (...)
                                | (...)
                                | (...);
                                section: (...) | (...);
                                value: Uint8Array;
                            },
                        >[];
                        kind: "request"
                        | "response";
                        method: string | null;
                        rawTarget: string | null;
                        relatedRequest:
                            | (
                                Readonly<{ kind: "request" | "response"; method: string | null; rawTarget: string | null; targetForm: "origin" | "absolute" | "authority" | "asterisk" | null; scheme: string | null; authority: string | null; ... 5 more ...; transport: Readonly<...>; }>
                            )
                            | null;
                        scheme: string
                        | null;
                        status: number | null;
                        targetForm: "origin" | "absolute" | "authority" | "asterisk" | null;
                        trailers:
                            | "unavailable"
                            | readonly Readonly<
                                { name: ...; provenance: ...; section: ...; value: ... },
                            >[]
                            | "pending";
                        transport: TransportFacts;
                    },
                >,
            >,
        >;
        response: (
            status: unknown,
            fields: unknown,
            bytes: unknown,
            options?: unknown,
        ) => Promise<
            Result<
                Readonly<
                    {
                        authority: string
                        | null;
                        body: Body;
                        fields: readonly Readonly<
                            {
                                name: string;
                                provenance: (...)
                                | (...)
                                | (...)
                                | (...);
                                section: (...) | (...);
                                value: Uint8Array;
                            },
                        >[];
                        kind: "request"
                        | "response";
                        method: string | null;
                        rawTarget: string | null;
                        relatedRequest:
                            | (
                                Readonly<{ kind: "request" | "response"; method: string | null; rawTarget: string | null; targetForm: "origin" | "absolute" | "authority" | "asterisk" | null; scheme: string | null; authority: string | null; ... 5 more ...; transport: Readonly<...>; }>
                            )
                            | null;
                        scheme: string
                        | null;
                        status: number | null;
                        targetForm: "origin" | "absolute" | "authority" | "asterisk" | null;
                        trailers:
                            | "unavailable"
                            | readonly Readonly<
                                { name: ...; provenance: ...; section: ...; value: ... },
                            >[]
                            | "pending";
                        transport: TransportFacts;
                    },
                >,
            >,
        >;
        validate: (
            a: unknown,
        ) => Result<
            Readonly<
                {
                    authority: string
                    | null;
                    body: Body;
                    fields: readonly Readonly<
                        {
                            name: string;
                            provenance: "caller"
                            | "http1"
                            | "http2"
                            | "http3";
                            section: "headers" | "trailers";
                            value: Uint8Array;
                        },
                    >[];
                    kind: "request"
                    | "response";
                    method: string | null;
                    rawTarget: string | null;
                    relatedRequest:
                        | (
                            Readonly<{ kind: "request" | "response"; method: string | null; rawTarget: string | null; targetForm: "origin" | "absolute" | "authority" | "asterisk" | null; scheme: string | null; authority: string | null; ... 5 more ...; transport: Readonly<...>; }>
                        )
                        | null;
                    scheme: string
                    | null;
                    status: number | null;
                    targetForm: "origin" | "absolute" | "authority" | "asterisk" | null;
                    trailers:
                        | "unavailable"
                        | readonly Readonly<
                            {
                                name: string;
                                provenance: (...)
                                | (...)
                                | (...)
                                | (...);
                                section: (...) | (...);
                                value: Uint8Array;
                            },
                        >[]
                        | "pending";
                    transport: TransportFacts;
                },
            >,
        >;
    },
>