code: public UpdateAppRequest withServerGroups(ServerGroup... serverGroups) {
          if (this.serverGroups == null) {
              setServerGroups(new java.util.ArrayList<ServerGroup>(serverGroups.length));
          }
          for (ServerGroup ele : serverGroups) {
              this.serverGroups.add(ele);
          }
          return this;
      }
docs: <p>
  List of server groups in the application to update.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setServerGroups(java.util.Collection)} or {@link #withServerGroups(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param serverGroups
  List of server groups in the application to update.
  @return Returns a reference to this object so that method calls can be chained together.