假设我们有两个hazelcast实例:HazelcastInstancefirstInstance=Hazelcast.newHazelcastInstance(newConfig());HazelcastInstancesecondInstance=Hazelcast.newHazelcastInstance(newConfig());//AddentriestofirstInstance//AddentriestosecondInstance现在我试图从firstInstance中删除所有内容，然后添加所有内容secondInstance到firstInstance。有什么办法可以