docs: public String getString() 
      {
          FieldInfo field = this.getField();
          if (field instanceof StringField)
              return field.toString();
          if (displayFieldName != null)
              return m_record.getField(displayFieldName).getString();  // Return the desc string
          else
              return m_record.getField(m_iFieldSeq).getString();  // Return the desc string
      }