code: public DescribeCacheClustersResult withCacheClusters(CacheCluster... cacheClusters) {
          if (this.cacheClusters == null) {
              setCacheClusters(new com.amazonaws.internal.SdkInternalList<CacheCluster>(cacheClusters.length));
          }
          for (CacheCluster ele : cacheClusters) {
              this.cacheClusters.add(ele);
          }
          return this;
      }
docs: <p>
  A list of clusters. Each item in the list contains detailed information about one cluster.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setCacheClusters(java.util.Collection)} or {@link #withCacheClusters(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param cacheClusters
  A list of clusters. Each item in the list contains detailed information about one cluster.
  @return Returns a reference to this object so that method calls can be chained together.