code: public DescribeExportTasksRequest withExportTaskIds(String... exportTaskIds) {
          if (this.exportTaskIds == null) {
              setExportTaskIds(new com.amazonaws.internal.SdkInternalList<String>(exportTaskIds.length));
          }
          for (String ele : exportTaskIds) {
              this.exportTaskIds.add(ele);
          }
          return this;
      }
docs: <p>
  The export task IDs.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setExportTaskIds(java.util.Collection)} or {@link #withExportTaskIds(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param exportTaskIds
  The export task IDs.
  @return Returns a reference to this object so that method calls can be chained together.