First entry in the FAQ...
There is no getLatestValue method available and will not be either.
You get the value by subscribing to the stream/property (using onValue) and handling the values in your callback
What if I'm not ready for the value at the time that it arrives? Doesn't this mean I have to store a copy of it?
If you have to subscribe to a property to get its value, what is the point of properties? Why not only use streams?
My situation is that when a user presses a button, some config is updated. Else where in my code I need to read the latest config values. But this is not going to be at the same time that its changed.