{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"this.lower_define_opaque(hir_id,"}]}
                        this.lower_define_opaque(hir_id, &define_opaque);
                        let body = this.lower_const_body(i.span, expr.as_deref());
                        hir::ImplItemKind::Const(ty, body)