Unity Plugin Task Cancellation

[leayleozo]

The task cancel mechanism https://msdn.microsoft.com/en-us/library/dd537607(v=vs.110).aspx does not seem to be working for us when applied to the Unity plugin.  

The Task API presented by the plugin seems to allow for the passing of CancellationToken objects. However, tasks (at least those returned by database functions such as Firebase.Database.Query.GetValueAsync()) do not seem to respond to the CancellationTokenSource.Cancel() function.

Does the Unity Plugin API support cancellation in this regard?  

We're using: 

Unity 5.5.0p2

Firebase Plugin 1.1.0

Mac OS X 10.11.6

Thank you