{"ast_node_type":"variable","tokens":[{"end":64,"kind":"keyword","start":0,"text":"let"}]}
                let base_ty = place_base.ty(cx.body, cx.tcx).ty;
            if let Some((place_base, ProjectionElem::Deref)) = place.as_ref().last_projection() {
                if let ty::Ref(..) = base_ty.kind() {