syntax_data: {"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"find_attr!(tcx.get_all_attrs(def_id),"}]}
source_snippet:             find_attr!(tcx.get_all_attrs(def_id), AttributeKind::AutomaticallyDerived(..));
context_before:         automatically_derived =
context_after:         impl_def_id = Some(def_id);