{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"sess.target_features.extend(tf_cfg.target_features.iter().copied());"}]}
    sess.target_features.extend(tf_cfg.target_features.iter().copied());
    sess.unstable_target_features.extend(tf_cfg.unstable_target_features.iter().copied());