{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"type"}]}
        type Result = ControlFlow<()>;
    impl<'ast> rustc_ast::visit::Visitor<'ast> for HasDefaultAttrOnVariant {
        fn visit_variant(&mut self, v: &'ast rustc_ast::Variant) -> ControlFlow<()> {