code: public DescribeReportDefinitionsResult withReportDefinitions(ReportDefinition... reportDefinitions) {
          if (this.reportDefinitions == null) {
              setReportDefinitions(new java.util.ArrayList<ReportDefinition>(reportDefinitions.length));
          }
          for (ReportDefinition ele : reportDefinitions) {
              this.reportDefinitions.add(ele);
          }
          return this;
      }
docs: <p>
  A list of AWS Cost and Usage reports owned by the account.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setReportDefinitions(java.util.Collection)} or {@link #withReportDefinitions(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param reportDefinitions
  A list of AWS Cost and Usage reports owned by the account.
  @return Returns a reference to this object so that method calls can be chained together.