/// <summary>
/// Invokes the given action with the set result of the task when the task succeeded.
/// </summary>
/// <param name="action">The action to perform.</param>
/// <returns>This task.</returns>
public static Task <T> OnResult <T>(this Task <T> task, Action <T> action)
{
return(task.OnResult <T>(action, null));
}
/// <summary>
/// Invokes the given action with the set result of the task when the task succeeded.
/// </summary>
/// <param name="action">The action to perform.</param>
/// <returns>This task.</returns>
public static Task OnResult(this Task task, Action <object> action)
{
return(task.OnResult(action, null));
}