public int getSyncProducerTimeout(int defaultSyncProducerTimeout) {
			return getProperty(SYNC_PRODUCER_TIMEOUT, defaultSyncProducerTimeout);
		}
Fetches partition data, throwing an exception if the expected number is not met after a number of
subsequent retries
@param topicName topic
@param expectedNumber expected number of partitions. If less or equal to 0, check is suppressed.
@return the partitions
spring-xd-messagebus-kafka/src/main/java/org/springframework/xd/dirt/integration/kafka/KafkaMessageBus.java