@Override
          public void selectionChanged(@NotNull ContentManagerEvent event) {
            if (event.getContent() == threadsContent) {
              if (threadsContent.isSelected()) {
                panel.setUpdateEnabled(true);
                if (panel.isRefreshNeeded()) {
                  panel.rebuildIfVisible(DebuggerSession.Event.CONTEXT);
                }
              }
              else {
                panel.setUpdateEnabled(false);
              }
            }
          }
@Override
          public void selectionChanged(@NotNull ContentManagerEvent event)