Does the California Real Estate Commissioner have authority to revoke a real estate broker's license?

[254 Cal.App.2d 738] To a very great extent the determination below rested upon the decision of this court in Denny v. Watson, 114 Cal.App.2d 491, 250 P.2d 692, which upheld the constitutionality of the statute here under consideration ( 10177.5); and both sides rely on certain broad pronouncements of the court with respect thereto. In concluding that the legislation was free from the infirmities urged by the licensees, the court delared in Denny that the statute 'does not, Ipso facto, require suspension or revocation of a real estate broker's license. It makes a judgment for fraud in a civil case prima facie evidence, upon which the Real Estate Commissioner may suspend or revoke the license.