docs: public void init(BaseField field, Converter fldDest, Converter fldSource, boolean bClearIfThisNull, boolean bOnlyIfDestNull, boolean bDontMoveNull)
      {
          super.init(field);
          this.setRespondsToMode(DBConstants.INIT_MOVE, false);
          this.setRespondsToMode(DBConstants.READ_MOVE, false); // By default, only respond to screen moves
          m_fldDest = fldDest;
          m_fldSource = fldSource;
          m_bClearIfThisNull = bClearIfThisNull;
          m_bOnlyIfDestNull = bOnlyIfDestNull;
          m_bDontMoveNull = bDontMoveNull;
      }