code: public GetDomainStatisticsReportResult withDailyVolumes(DailyVolume... dailyVolumes) {
          if (this.dailyVolumes == null) {
              setDailyVolumes(new java.util.ArrayList<DailyVolume>(dailyVolumes.length));
          }
          for (DailyVolume ele : dailyVolumes) {
              this.dailyVolumes.add(ele);
          }
          return this;
      }
docs: <p>
  An object that contains deliverability metrics for the domain that you specified. This object contains data for
  each day, starting on the <code>StartDate</code> and ending on the <code>EndDate</code>.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setDailyVolumes(java.util.Collection)} or {@link #withDailyVolumes(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param dailyVolumes
  An object that contains deliverability metrics for the domain that you specified. This object contains
  data for each day, starting on the <code>StartDate</code> and ending on the <code>EndDate</code>.
  @return Returns a reference to this object so that method calls can be chained together.