public static @Nullable PopupHandler installToolbarCustomizationHandler(@NotNull ActionGroup actionGroup,
                                                                          @Nullable String groupID,
                                                                          @NotNull JComponent component,
                                                                          @NotNull String place) {
    PopupHandler popupHandler = createToolbarCustomizationHandler(actionGroup, groupID, component, place);
    if (popupHandler != null) component.addMouseListener(popupHandler);
    return popupHandler;
  }
public static @Nullable PopupHandler installToolbarCustomizationHandler(@NotNull ActionGroup actionGroup,
                                                                          @Nullable String groupID,
                                                                          @NotNull JComponent component,
                                                                          @NotNull String place)