The court shall allow the attorney at law appointed to represent a defendant a reasonable fee for his services, which shall be paid by the plaintiff, but shall be taxed as costs of court.
The attorney so appointed may require the plaintiff to furnish security for the costs which may be paid by, and the reasonable fee to be allowed, the attorney.
If the attorney so appointed is retained as counsel for the defendant, the attorney shall immediately advise the court and opposing counsel of such employment.