{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"ids.iter().map(|id|"}]}
            ids.iter().map(|id| self.param(span, *id, self.ty(span, ast::TyKind::Infer))).collect(),
        let fn_decl = self.fn_decl(
            ast::FnRetTy::Default(span),