@Override
	public Map<Partition, Long> getObject() throws Exception {
		//TODO: support initial offsets for multiple topics' partitions
		return (StringUtils.hasText(initialOffsetList) && topics.size() == 1) ?
				parseOffsetList(topics.get(0), initialOffsetList) : Collections.<Partition, Long>emptyMap();
	}
Parses the list of initial offsets and creates a map to initialize the {@link OffsetManager}

@author Marius Bogoevici
@author Ilayaperumal Gopinathan
extensions/spring-xd-extension-kafka/src/main/java/org/springframework/integration/x/kafka/InitialOffsetsFactoryBean.java