message: Update CompendiumCollection for v9.255
  Closes
diff: @@ -164,7 +164,9 @@ declare global {
  * Provide a dialog form that prompts the user to import the full contents of a Compendium pack into the World.
  * @param options - Additional options passed to the Dialog.confirm method
  * (default: `{}`)
  - * @returns A Promise which resolves or rejects once the dialog has been submitted or closed
  + * @returns A promise which resolves in the following ways: an array of imported
  + * Documents if the "yes" button was pressed, false if the "no" button was pressed, or
  + * null if the dialog was closed without making a choice.
  */
  importDialog(
  options?: Dialog.Options | undefined
  