In Estate of Duffill (1922) 188 Cal. 536, the court said, "Unquestionably, when proceedings are commenced attacking the validity of a trust, it is the right . . . of the trustee to secure legal assistance, and it is equally beyond doubt that the facilities to command such assistance should not be narrowed, if not entirely destroyed, by any such restriction as that compensation for such assistance is wholly dependent upon, and measured by, the degree of success." (Id. at pp. 556-557.) Duffill involved a challenge to a testamentary trust in which the trustee largely prevailed. The court indicated that the efforts of the attorneys for the trustee "were in this instance directed to the preservation of the trust in its entirety, a duty imposed upon the trustee, whom they represented, irrespective of whether, if upheld or only partially upheld, the result might be more beneficial to some than to others who are interested therein . . . ." (Estate of Duffill, supra, 188 Cal. at pp. 554-555.) The court continued: "The appellant assailed the validity of the entire trust, against which attack it was the duty of the trustee to defend, and which it did defend, with the result that though some of the challenger's contentions were sustained, the general scheme of the trust was nevertheless preserved. Under such circumstances we can see no good reason for holding that the attorneys for the trustee should not be compensated for the entire service." (Id. at p. 555.)