public void setHint(@NotNull JBPopup hint) {
    myHint = hint;
    FocusListener focusAdapter = new FocusAdapter() {
      @Override
      public void focusLost(FocusEvent e) {
        Component previouslyFocused = WindowManagerEx.getInstanceEx().getFocusedComponent(myProject);
        if (previouslyFocused != DocumentationHintEditorPane.this) {
          hint.cancel();
        }
      }
    };
    addFocusListener(focusAdapter);
    Disposer.register(hint, () -> {
      myHint = null;
      removeFocusListener(focusAdapter);
    });
  }
public void setHint(@NotNull JBPopup hint)