The provisions of the Code of Civil Procedure relating to writs of mandate shall, so far as applicable, apply to proceedings in the courts under the provisions of this part. A copy of every pleading filed pursuant to the terms of this part shall be served on the appeals board and upon every party who entered an appearance in the action before the appeals board and whose interest therein is adverse to the party filing such pleading.

(Added by Stats. 1973, Ch. 993.)