public Boolean isShowCacheClustersNotInReplicationGroups() {
        return this.showCacheClustersNotInReplicationGroups;
    }
<p>
An optional flag that can be included in the <code>DescribeCacheCluster</code> request to show only nodes
(API/CLI: clusters) that are not members of a replication group. In practice, this mean Memcached and single node
Redis OSS clusters.
</p>

@return An optional flag that can be included in the <code>DescribeCacheCluster</code> request to show only nodes
        (API/CLI: clusters) that are not members of a replication group. In practice, this mean Memcached and
        single node Redis OSS clusters.
aws-java-sdk-elasticache/src/main/java/com/amazonaws/services/elasticache/model/DescribeCacheClustersRequest.java