private Configuration baseConfig(boolean useLogFile) {
Config4Impl config = (Config4Impl) Db4o.newConfiguration();
config.objectClass(CrashData.class).objectField("_name").indexed(true);
config.reflectWith(Platform4.reflectorForType(CrashSimulatingTestCase.class));
config.bTreeNodeSize(4);
config.lockDatabaseFile(false);
config.fileBasedTransactionLog(useLogFile);
ID_SYSTEM.value().configure(config);
FREESPACE_MANAGER.value().configure(config);
return config;
}