docs: public int getRawFieldData(Convert field)
      {
          String strKey = this.getFullKey(field.getFieldName());
          Class<?> classData = field.getField().getDataClass();
          Object objValue = this.getMessage().getNative(strKey);
          try {
              objValue = DataConverters.convertObjectToDatatype(objValue, classData, null);  // I do this just to be careful.
          } catch (Exception ex) {
              objValue = null;
          }
          return field.setData(objValue);
      }