{"ast_node_type":"function","tokens":[{"end":60,"kind":"keyword","start":0,"text":"fn"}]}
    fn new(cx: LivenessContext<'a, 'typeck, 'tcx>) -> Self {
impl<'a, 'typeck, 'tcx> LivenessResults<'a, 'typeck, 'tcx> {
        let num_points = cx.location_map.num_points();