{"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"self.maybe_collect_expr_as_pat(&expr).unwrap_or_else(||"}]}
        self.maybe_collect_expr_as_pat(&expr).unwrap_or_else(|| {
    fn collect_expr_as_pat(&mut self, expr: ast::Expr) -> PatId {
            let src = self.expander.in_file(AstPtr::new(&expr).wrap_left());