https://vscode-ext-docs.azurewebsites.net/api/extension-guides/tree-view

• The guide should explain upfront what is Tree View and what is View Container (best with a illustration like https://vscode-ext-docs.azurewebsites.net/api/extension-capabilities/extending-workbench)
• Does not mention test as one of the location. Where is it?
• Does not explain contributes.views.tree-view.
• Sample code do not match the latest code in https://github.com/Microsoft/vscode-extension-samples/blob/master/tree-view-sample/package.json.
• View Actions have no image showing what/where they are