docs: public void setupKeys()
      {
          KeyArea keyArea = null;
          for (int iKeyArea = DBConstants.MAIN_KEY_FIELD; iKeyArea < 64; iKeyArea++)
          {
              keyArea = this.setupKey(iKeyArea);      // Allocate this Key (overidden in file class)
              if (keyArea == null)
                  break;                              // End of Keys
          }
      }