code: public HyperParameterTuningJobWarmStartConfig withParentHyperParameterTuningJobs(ParentHyperParameterTuningJob... parentHyperParameterTuningJobs) {
          if (this.parentHyperParameterTuningJobs == null) {
              setParentHyperParameterTuningJobs(new java.util.ArrayList<ParentHyperParameterTuningJob>(parentHyperParameterTuningJobs.length));
          }
          for (ParentHyperParameterTuningJob ele : parentHyperParameterTuningJobs) {
              this.parentHyperParameterTuningJobs.add(ele);
          }
          return this;
      }
docs: <p>
  An array of hyperparameter tuning jobs that are used as the starting point for the new hyperparameter tuning job.
  For more information about warm starting a hyperparameter tuning job, see <a
  href="http://docs.aws.amazon.com/sagemaker/latest/dg/automatic-model-tuning-warm-start.html">Using a Previous
  Hyperparameter Tuning Job as a Starting Point</a>.
  </p>
  <p>
  Hyperparameter tuning jobs created before October 1, 2018 cannot be used as parent jobs for warm start tuning
  jobs.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setParentHyperParameterTuningJobs(java.util.Collection)} or
  {@link #withParentHyperParameterTuningJobs(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param parentHyperParameterTuningJobs
  An array of hyperparameter tuning jobs that are used as the starting point for the new hyperparameter
  tuning job. For more information about warm starting a hyperparameter tuning job, see <a
  href="http://docs.aws.amazon.com/sagemaker/latest/dg/automatic-model-tuning-warm-start.html">Using a
  Previous Hyperparameter Tuning Job as a Starting Point</a>.</p>
  <p>
  Hyperparameter tuning jobs created before October 1, 2018 cannot be used as parent jobs for warm start
  tuning jobs.
  @return Returns a reference to this object so that method calls can be chained together.