I want to call to context menu in my application.

The issue that I don't have any items in the tree.

I active my view and then I want to open context menu.

```
 SWTBotView view = bot.viewByTitle("Project Explorer");

 view.bot.tree().contextMenu("New").click();

```

then I got error message

Could you please advise me how I can open contextMeny without any item in the tree ?