code: public ListBackupPlanTemplatesResult withBackupPlanTemplatesList(BackupPlanTemplatesListMember... backupPlanTemplatesList) {
          if (this.backupPlanTemplatesList == null) {
              setBackupPlanTemplatesList(new java.util.ArrayList<BackupPlanTemplatesListMember>(backupPlanTemplatesList.length));
          }
          for (BackupPlanTemplatesListMember ele : backupPlanTemplatesList) {
              this.backupPlanTemplatesList.add(ele);
          }
          return this;
      }
docs: <p>
  An array of template list items containing metadata about your saved templates.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setBackupPlanTemplatesList(java.util.Collection)} or
  {@link #withBackupPlanTemplatesList(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param backupPlanTemplatesList
  An array of template list items containing metadata about your saved templates.
  @return Returns a reference to this object so that method calls can be chained together.