{"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"let"}]}
                let sig = object_type.projection_bounds().find_map(|pb| {
            ty::Dynamic(object_type, ..) => {
                    let pb = pb.with_self_ty(self.tcx, self.tcx.types.trait_object_dummy_self);