{"ast_node_type":"function","tokens":[{"end":97,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn expr_match(&self, span: Span, arg: P<ast::Expr>, arms: ThinVec<ast::Arm>) -> P<Expr> {
        self.expr(span, ast::ExprKind::Match(arg, arms, MatchKind::Prefix))