message: Make return type of FilePicker#_createDirectoryDialog void
diff: @@ -326,9 +326,7 @@ declare class FilePicker<
  * Present the user with a dialog to create a subdirectory within their currentl
  * @internal browsed file storate location.
  */
  - protected _createDirectoryDialog(
  - source: FilePicker.Source
  - ): Promise<FilePicker.BrowseResult | undefined | void | null>;
  + protected _createDirectoryDialog(source: FilePicker.Source): void;
  /**
  * Handle changes to the bucket selector
  