code: public void init(Record thisFile, String userIdFieldName, boolean bFirstTimeOnly)
      {
          super.init(thisFile);
          this.userIdFieldName = userIdFieldName;
          m_bFirstTimeOnly = bFirstTimeOnly;
      }
docs: Constructor.
  @param record My owner (usually passed as null, and set on addListener in setOwner()).
  @param iFieldSeq Sequence of the user id field.
  @param iFirstTimeOnly Set it on the first time only?