public Integer getPrefetchCount(String systemName) {
    return getInt(String.format(CONFIG_PREFETCH_COUNT, systemName), DEFAULT_CONFIG_PREFETCH_COUNT);
  }
Get the per partition prefetch count for the Event Hubs client
@param systemName Name of the system.
@return Per partition Prefetch count for the Event Hubs client.
samza-azure/src/main/java/org/apache/samza/system/eventhub/EventHubConfig.java