CollabProperties is an unmodifiable Map over the Artifact Properties.
The key of the map is the property name, as String; the value
is a CollabProperty instance which include the property value and
other simple property metadata.
Query operations on the returned map "read through" to the specified
map, and attempts to modify the returned map, whether direct or via
its collection views, result in an UnsupportedOperationException.
Below are examples in JSON and XML formats. All examples are shown with all inherited members. Quoting when required is part of the examples, but you must obviously populate with your own data.