U Ñec(ã@s0dZddlmZddlmZGdd„deƒZdS)zDatabase Features.é)ÚDatabaseFeatures)Úcached_propertyc@s,eZdZdZgZedd„ƒZedd„ƒZdS)rz&Database Features Specification class.cCs |jjdkS)zs