private void SetDataSource(IPublicSuffixDataSource dataSource)
 {
     _dataSource = dataSource;
     _dataSource.CacheError += (s, e) => CacheError(this, e);
     _dataSource.DataRefreshError += (s, e) => DataRefreshError(this, e);
 }
 internal PublicSuffixDataStore(IPublicSuffixDataSource dataSource)
 {
     SetDataSource(dataSource);
 }