code: public java.util.List<String> getInstanceIdSet() {
          if (instanceIdSet == null) {
              instanceIdSet = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return instanceIdSet;
      }
docs: <p>
  The IDs of the newly launched instances.
  </p>
  
  @return The IDs of the newly launched instances.