集成第三方代码(Working with Third-Party Code)
ifversioningwerebeingusedandtherepresentationbeingPUTincludedchangestoaresourcethatconflictwiththosemadebyanearlier(third-party
ifversioningwerebeingusedandtheentitybeingPUTincludedchangestoaresourcewhichconflictwiththosemadebyanearlier(third-party