type MdKitTrpcClient = {
  listDocumentVersions: MdKitTrpcQuery<MdKitDocumentInput, {
     versions: MdKitDocumentVersionSummary[];
  }>;
  readDocument: MdKitTrpcQuery<MdKitDocumentInput, MdKitDocumentSnapshot>;
  readDocumentVersion: MdKitTrpcQuery<MdKitVersionInput, 
     | MdKitDocumentVersionDetail
    | null>;
  resyncDocument: MdKitTrpcMutation<MdKitDocumentInput, MdKitDocumentSnapshot>;
  writeDocument: MdKitTrpcMutation<MdKitDocumentWriteInput, MdKitDocumentWriteResult>;
};