MasterConsumerStore masterConsumers
= new MasterConsumerStore(_database);
MasterUserStore masterUsers = new MasterUserStore(_database);
// init proxy stores
PropertyStore properties = new PropertyStore(source);
VersionInfo info = new VersionInfo(properties);
String schemaVersion = info.getProxySchemaVersion();
if (schemaVersion == null || !schemaVersion.equals("1.0")) {
throw new PersistenceException("Cannot import data: unsupported schema version: "
+ schemaVersion);