040000 tree 22993ebced5e3f2d326e8605d9e73d0ec7c50640	dist
040000 tree c6b7af4ea44bcab25f393c6eb9d304fb3de5dc64	persistence
040000 tree 8e105fbb494176df1425f7b02473450e0a104c39	primitives
040000 tree 7e38556339edb2b513e745db79b476d7c8660ec2	serializers