{"ast_node_type":"variable","tokens":[{"end":36,"kind":"keyword","start":0,"text":"let"}]}
        let capture_kind = match m {
    fn ref_capture_with_adjusts(&mut self, m: Mutability, tgt_expr: ExprId, rest: &[Adjustment]) {
            Mutability::Mut => CaptureKind::ByRef(BorrowKind::Mut { kind: MutBorrowKind::Default }),