public String getStreamConsumerGroup(String systemName, String streamName) {
    return getFromStreamIdOrName(CONFIG_STREAM_CONSUMER_GROUP, streamName, DEFAULT_CONFIG_STREAM_CONSUMER_GROUP);
  }
Get the Event Hubs consumer group used for consumption for the stream

@param systemName name of the system
@param streamName name of stream (physical or streamId)
@return Event Hubs consumer group
samza-azure/src/main/java/org/apache/samza/system/eventhub/EventHubConfig.java