@NotNull
  private static QuickMergeContentsVariants toMergeVariant(int exitCode) {
    return switch (exitCode) {
      case MERGE_ALL_CODE -> QuickMergeContentsVariants.all;
      case OK_EXIT_CODE -> QuickMergeContentsVariants.select;
      default -> QuickMergeContentsVariants.cancel;
    };
  }
@NotNull
  private static QuickMergeContentsVariants toMergeVariant(int exitCode)