@Nullable
  public static ChangelistConflictNotificationPanel create(@NotNull Project project,
                                                           @NotNull VirtualFile file,
                                                           @NotNull FileEditor fileEditor) {
    final ChangeListManager manager = ChangeListManager.getInstance(project);
    final Change change = manager.getChange(file);
    if (change == null) return null;
    final LocalChangeList changeList = manager.getChangeList(change);
    if (changeList == null) return null;
    return new ChangelistConflictNotificationPanel(project, file, fileEditor, changeList);
  }
@Nullable
  public static ChangelistConflictNotificationPanel create(@NotNull Project project,
                                                           @NotNull VirtualFile file,
                                                           @NotNull FileEditor fileEditor)