public EventHubsSystemDescriptor withPrefetchCount(int count) {
    this.consumerPrefetchCount = Optional.of(count);
    return this;
  }
Number of events that Event Hubs client should prefetch from the server.

@param count the number of events that should be prefetched.
@return this system descriptor
samza-azure/src/main/java/org/apache/samza/system/eventhub/descriptors/EventHubsSystemDescriptor.java