{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"tcx.def_span(ty_impl_item.def_id),"}]}
                tcx.def_span(ty_impl_item.def_id),
                tcx.local_def_id_to_hir_id(ty_impl_item.def_id.expect_local()),
                errors::UselessImplItem,