{"ast_node_type":"variable","tokens":[{"end":100,"kind":"keyword","start":0,"text":"let"}]}
        let fn_path = hir::QPath::LangItem(hir::LangItem::RangeInclusiveNew, self.lower_span(span));
        let e2 = self.lower_expr_mut(e2);
        let fn_expr = self.arena.alloc(self.expr(span, hir::ExprKind::Path(fn_path)));