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This provides a snapshot of the current Property value. This may return a default value as defined by DefineXPropertyDefaultValue (TODO:LINK), a value that has been posted by a user using PostXPropertyUpdate (TODO:LINK), or empty default data if neither of the former is present.
Note that while it is sometimes useful to get the current value, a more common use case is to call BindXPropertyValue (TODO:LINK) which will give you an event any time the property value changes. This is a more efficient way of keeping your scene objects up-to-date with the server than, say calling GetXPropertyValue in an Update() loop.
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