if (m_Counter == -1) {
if (!isFirstBatchDone()) {
  public boolean input(Instance instance) {    if (getInputFormat() == null)      throw new IllegalStateException("No input instance format defined");    if (m_NewBatch) {      resetQueue();      m_NewBatch = false;    }        if (m_Counter == -1) {      bufferInput(instance);      return false;    }     else {      convertInstance(instance);      return true;    }  }