SHARD_GETRECORDS_INTERVAL_MILLIS wrong use?

 
// sleep for the fetch interval before the next getRecords attempt with the
// refreshed iterator
if (expiredIteratorBackoffMillis != 0) {
 Thread.sleep(expiredIteratorBackoffMillis);
}

return new PollingRecordPublisher(
        startingPosition,
        streamShardHandle,
        metricsReporter,
        kinesisProxy,
        configuration.getMaxNumberOfRecordsPerFetch(),
        configuration.getFetchIntervalMillis());