code: public ListSpeechSynthesisTasksResult withSynthesisTasks(SynthesisTask... synthesisTasks) {
          if (this.synthesisTasks == null) {
              setSynthesisTasks(new java.util.ArrayList<SynthesisTask>(synthesisTasks.length));
          }
          for (SynthesisTask ele : synthesisTasks) {
              this.synthesisTasks.add(ele);
          }
          return this;
      }
docs: <p>
  List of SynthesisTask objects that provides information from the specified task in the list request, including
  output format, creation time, task status, and so on.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setSynthesisTasks(java.util.Collection)} or {@link #withSynthesisTasks(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param synthesisTasks
  List of SynthesisTask objects that provides information from the specified task in the list request,
  including output format, creation time, task status, and so on.
  @return Returns a reference to this object so that method calls can be chained together.