{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"tcx.dcx().emit_err(errors::FunctionNotHaveDefaultImplementation"}]}
                            tcx.dcx().emit_err(errors::FunctionNotHaveDefaultImplementation {
                        if !item.defaultness(tcx).has_value() {
                                span: tcx.def_span(item.def_id),