{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"collect::ItemCtxt::new(tcx,"}]}
    collect::ItemCtxt::new(tcx, env_def_id.def_id)
    let env_def_id = tcx.hir_get_parent_item(hir_ty.hir_id);
        .lowerer()