{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"assert!(duplicate_entries.is_empty(),"}]}
        assert!(duplicate_entries.is_empty(), "unexpected duplicates: {duplicate_entries:?}");
        let duplicate_entries = self.delegate.clone_duplicate_opaque_types();
        let mut matching = self.delegate.clone_opaque_types_lookup_table().into_iter().filter(