I see that the code for select("String") forwarding the operation to code
that selects a group of nodes, but unfortunately doesn't return the single
selected item in this case as the SWTBotTreeItem, so it fails to chain in
the below example, while the getTreeItem("String") works as expected.
bot.tree().expandNode("C1").select("Debug").expand(); // fails to expand
Debug bot.tree().expandNode("C1").getTreeItem("Debug").expand(); // works