@Override
  public @NotNull ActionCallback getReady(@NotNull Object requestor) {
    AbstractProjectViewPane pane = currentViewSubId == null ? null : idToPane.get(currentViewSubId);
    if (pane == null) {
      pane = currentViewId == null ? null : idToPane.get(currentViewId);
    }
    return pane != null ? pane.getReady(requestor) : ActionCallback.DONE;
  }
@Override
  public @NotNull ActionCallback getReady(@NotNull Object requestor)