{"ast_node_type":"function","tokens":[{"end":71,"kind":"keyword","start":0,"text":"fn"}]}
    fn check_item(&mut self, cx: &EarlyContext<'_>, item: &ast::Item) {
impl EarlyLintPass for LintPassImpl {
        if let ast::ItemKind::Impl(box ast::Impl { of_trait: Some(lint_pass), .. }) = &item.kind