AN OPEN-LABEL, MULTICENTER, DOSE-ESCALATION, PHASE IA/IB STUDY TO EVALUATE SAFETY, PHARMACOKINETICS, AND PRELIMINIARY ANTI-TUMOR ACTIVITY OF RO7122290, A FIBROBLAST ACTIVATION PROTEIN-? (FAP) TARGETED 4-1BB LIGAND (CD137L), WITH OR WITHOUT OBINUTUZUMAB PRE-TREATMENT, IN PATIENTS WITH ADVANCED AND/OR METASTATIC SOLID TUMORS AS SINGLE AGENT OR IN COMBINATION WITH ATEZOLIZUMAB FOLLOWED BY TUMOR SPECIFIC EXPANSION COHORT(S)