code: public void setItems(java.util.Collection<DistributionSummary> items) {
          if (items == null) {
              this.items = null;
              return;
          }
  
          this.items = new com.amazonaws.internal.SdkInternalList<DistributionSummary>(items);
      }
docs: <p>
  A complex type that contains one <code>DistributionSummary</code> element for each distribution that was created
  by the current AWS account.
  </p>
  
  @param items
  A complex type that contains one <code>DistributionSummary</code> element for each distribution that was
  created by the current AWS account.