{"ast_node_type":"function","tokens":[{"end":77,"kind":"keyword","start":0,"text":"fn"}]}
    fn new(tcx: TyCtxt<'tcx>, body: &'a Body<'tcx>, map: Map<'tcx>) -> Self {
impl<'a, 'tcx> ConstAnalysis<'a, 'tcx> {
        let typing_env = body.typing_env(tcx);