message: Update ClientDatabaseBackend for v9.255
  Closes
diff: @@ -69,6 +69,7 @@ declare global {
  * Handle a SocketResponse from the server when one or multiple documents were created
  * @param response - The provided Socket response
  * @returns An Array of created Document instances
  + * @internal
  */
  protected _handleCreateDocuments(response: SocketResponse): foundry.abstract.Document<any, any>[];
  @@ -76,6 +77,7 @@ declare global {
  * Handle a SocketResponse from the server when one or multiple documents were created
  * @param response - The provided Socket response
  * @returns An Array of created Document instances
  + * @internal
  */
  protected _handleCreateEmbeddedDocuments(response: SocketResponse): foundry.abstract.Document<any, any>[];
  @@ -125,6 +127,7 @@ declare global {
  * Handle a SocketResponse from the server when one or multiple documents were updated
  * @param response - The provided Socket response
  * @returns An Array of updated Document instances
  + * @internal
  */
  protected _handleUpdateDocuments(response: SocketResponse): foundry.abstract.Document<any, any>[];
  @@ -132,6 +135,7 @@ declare global {
  * Handle a SocketResponse from the server when embedded Documents are updated in a parent Document.
  * @param response - The provided Socket response
  * @returns An Array of updated Document instances
  + * @internal
  */
  protected _handleUpdateEmbeddedDocuments(response: SocketResponse): foundry.abstract.Document<any, any>[];
  @@ -178,6 +182,7 @@ declare global {
  * Handle a SocketResponse from the server where Documents are deleted.
  * @param response - The provided Socket response
  * @returns An Array of deleted Document instances
  + * @internal
  */
  protected _handleDeleteDocuments(response: SocketResponse): foundry.abstract.Document<any, any>[];
  @@ -185,6 +190,7 @@ declare global {
  * Handle a SocketResponse from the server when embedded Documents are deleted from a parent Document.
  * @param response - The provided Socket response
  * @returns An Array of deleted Document instances
  + * @internal
  */
  protected _handleDeleteEmbeddedDocuments(response: SocketResponse): foundry.abstract.Document<any, any>[];
  