Cal. Bus. & Prof. Code § 7510.4
The record of conviction, or a certified copy thereof, shall be conclusive evidence of such conviction.
A plea or verdict of guilty or a conviction following a plea of nolo contendere is deemed to be a conviction within the meaning of this article. The director may order the license suspended or revoked, or may decline to issue a license, when the time for appeal has elapsed, or the judgment of conviction has been affirmed on appeal or when an order granting probation is made suspending the imposition of sentence, irrespective of a subsequent order under the provisions of Section 1203.4 of the Penal Code allowing such person to withdraw his or her plea of guilty and to enter a plea of not guilty, or setting aside the verdict of guilty or dismissing the accusation, information, or indictment.
Ca. Bus. and Prof'l. Code § 7510.4