docs: public void addCustomFragment(byte[] planHash, int outputDepId, ByteBuffer parameterSet, byte[] fragmentPlan, String stmtText) {
          FragmentData item = new FragmentData();
          item.m_planHash = planHash;
          item.m_outputDepId = outputDepId;
          item.m_parameterSet = parameterSet;
          item.m_fragmentPlan = fragmentPlan;
          item.m_stmtText = stmtText.getBytes();
          m_items.add(item);
      }