What is the test for a claim of conflict of interest under the California Constitution?

performanceas opposed to a mere theoretical division of loyalties.' [Citation.] Under the federal precedents, which we have also applied to claims of conflict of interest under the California Constitution, a defendant is required to show that counsel performed deficiently and a reasonable probability exists that, but for counsel's deficiencies, the result of the proceeding would have been different." (People v. Gonzales and Soliz (2011) 52 Cal.4th 254, 309310, 128 Cal.Rptr.3d 417, 256 P.3d 543.)