{"ast_node_type":"variable","tokens":[{"end":62,"kind":"keyword","start":0,"text":"let"}]}
            let b_lane2 = b.value_lane(fx, 2).load_scalar(fx);
            let b_lane1 = b.value_lane(fx, 1).load_scalar(fx);
            let b_lane3 = b.value_lane(fx, 3).load_scalar(fx);