/// <summary>
/// Wait the specified procedureWithCallback.
/// </summary>
/// <returns>The wait.</returns>
/// <param name="procedureWithCallback">Procedure with callback.</param>
public static IPromise Wait(Action <Action <IPromise> > procedureWithCallback)
{
var waiter = new Waiter();
Debug.LogFormat("new waiter");
procedureWithCallback(waiter.Wait);
waiter.Check();
return(waiter.Ready());
}