code: public void addContextPanelFactory(ContextPanelFactory contextPanelFactory) {
          if (contextPanelFactories == null) {
              contextPanelFactories = createList();
          }
          contextPanelFactories.add(contextPanelFactory);
      }
docs: Adds the given {@link ContextPanelFactory} to the view hook, to be later added to the
  {@link org.parosproxy.paros.view.View View}.
  
  @param contextPanelFactory the {@code ContextPanelFactory} that will be added to the {@code View}
  @since 2.5.0