public SynchronousTaskListWorkflow(params BaseSynchronousTask[]  tasks)
        {
            if (tasks.Length == 0) throw new ArgumentException("Task list cannot be empty");

            WorkflowNode current = null;

            for (int i = tasks.Length; i >= 1; i--)
                current = new WorkflowNode(tasks[i - 1].Name, tasks[i - 1], current);

            if (current == null)
                current = new WorkflowNode(tasks[0].Name, null);

            root = current;
        }