Consumer {
	/**
     * @see KafkaConsumer#enforceRebalance()
     */
	void rejoinGroupenforceRebalance();
}

KafkaConsumer {
   /**
	* Alert the consumer to trigger a new rebalance by rejoining the group. You should not need to call this during normal processing,
	* as the consumer group will manage itself automatically and rebalance when necessary. However there may be situations where 
	* the application wishes to trigger a rebalance that would otherwise not occur, for example if some condition has changed that
	* has implications for the ideal partition assignment.
	* <p>
	* If a rebalance is already in progress, an exception will be thrown
	* so you can choose to retry or not once the current rebalance completes.
	* 
	* @throws java.lang.IllegalStateException if the consumer does not use group subscription
    * @throws org.apache.kafka.common.errors.RebalanceInProgressException if a rebalance is already in progress
	* @throws org.apache.kafka.common.errors.CoordinatorNotAvailableException if the coordinator is unknown/unavailable
	* @throws org.apache.kafka.common.KafkaException for any other unrecoverable errors (e.g. rebalance callback errors)
	*/ 
	public void rejoinGroupenforceRebalance() {}
}