Variable ForkConst

Fork: TaggedStruct<
    "fork",
    {
        from: Struct<
            {
                event: EntityIdClass;
                feed: optional<RefSchema<Feed & OfKind<Object> & Unknown>>;
                thread: optional<brand<String, "@dxos/echo/Feed/BranchId">>;
            },
        >;
    },
> = ...