040000 tree dfef1de34a1b84ed1e0192c2065d662aa0f95543	nnbd_opted_in
040000 tree 364da43002d428b03fe7bcba5f70facaad28b1f8	nnbd_opted_out
040000 tree df70b56f30ee48ad434cc9df62ef5e8a76c87878	spawn_hybrid