public object ResolveArgumentPreviousActor(IActor resolvedActor, string[] parameters, IHandlerContext handlerContext)
{
if (parameters.Length != 0)
{
throw new SystemException("argument previousActor expects exactly zero parameters instead of " + parameters.Length);
}
IActor actor = handlerContext.GetPreviousActor();
if (actor == null)
{
throw new SystemException("argument previousActor could not be resolve because there is no previous actor");
}
return(actor);
}