How can I get the value when the promise has completed?

[thinhbuzz]

This is the promise class

// Niantic.Promises
class Niantic.Promises.Promise<T> : System.Object, Niantic.Promises.IPromise<T>, Niantic.Promises.ICompletable
{
    Niantic.Promises.ThreadCheckerToken threadCheckerToken; // 0x0
    System.Collections.Generic.Dictionary<T,System.Action> whenFuncs; // 0x0
    System.Action thenFuncs; // 0x0
    System.Action<T> thenPayloadFuncs; // 0x0
    System.Action<System.String> errorFuncs; // 0x0
    System.Action finallyFuncs; // 0x0
    System.Boolean completeCalled; // 0x0
    System.Boolean errorCalled; // 0x0
    T completedValue; // 0x0
    System.String errorValue; // 0x0
    System.Void .ctor();
    System.Void CheckThread();
    System.Boolean get_Completed();
    System.Void Complete(T completionValue);
    System.Void Error(System.String message);
    Niantic.Promises.IPromise<T> Error(System.Action<System.String> onError);
    Niantic.Promises.IPromise<T> Then(System.Action onComplete);
    Niantic.Promises.IPromise<T> Then(System.Action<T> onComplete);
    Niantic.Promises.IPromise<T> When(T val, System.Action onComplete);
    Niantic.Promises.IPromise<T> Finally(System.Action onFinally);
}