{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"if"}]}
                        if self.tcx.is_lang_item(adt_def.did(), LangItem::DynMetadata) {
                        // see <https://github.com/rust-lang/rust/blob/7601adcc764d42c9f2984082b49948af652df986/compiler/rustc_middle/src/ty/layout.rs#L861-L864>
                            self.fail(