{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"if"}]}
    if let ExprKind::Index(..) | ExprKind::Field(..) | ExprKind::Unary(UnOp::Deref, ..) =
    // the same logic applies field access `&mut expr.field` and reborrows `&mut *expr`.
        e_alloc.kind