How can I use RestClient.ExecuteTaskAsync on .Net 3.5 when using TaskParallelLibrary and AsyncBridge ?

[who]

The NuGet packages TaskParallelLibrary and AsyncBridge.Net35 bring Task, await, and general support for async to .Net 3.5.

However, when I include these dependencies alongside RestSharp and attempt compiling to a .Net 3.5 target, the preprocessor directives defined in RestClient.Async.cs prevent me from using RestClient.ExecuteTaskAsync.

If I force the inclusion of the RestSharp .Net 4.0 DLL into my .Net 3.5 context, then I get this error when compiling (using mono):

error CS1684: Reference to type `System.Threading.Tasks.Task`1<RestSharp.IRestResponse<T>>' claims it is defined assembly `mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089', but it could not be found

Getting to the point
So, my question is, can I use the async features of RestSharp in .Net 3.5 by shimming in the NuGet packages above? Has anyone gotten this to work?

[hallem]

The short answer is no, the Async support in RestSharp requires .Net 4.0+