Missing example of how to use applicationProperties

It's unclear from the current documentation how to add applicationProperties in the yaml manifest of an application for Qt Application Manager. It mentions the "actual properties must be listed under the private or protected access control tag" but does not explain what an access control tag is, nor show what it looks like in practice. The documentation should be expanded with an example of how to add one or more application properties that can be read by the system ui, and by the application itself.