docs: public void setupKeyBuffer(BaseBuffer destBuffer, int iAreaDesc)
      {
          int iKeyFields = this.getKeyFields();
          m_rgobjTempData = new Object[iKeyFields];
          for (int iKeyFieldSeq = Constants.MAIN_KEY_FIELD; iKeyFieldSeq < iKeyFields + Constants.MAIN_KEY_FIELD; iKeyFieldSeq++)
          {
              m_rgobjTempData[iKeyFieldSeq] = this.getField(iKeyFieldSeq).getData();
          }
      }