docs: def get_field_value(self, name):
          """
          Get the field value from the modified data or the original one
          """
          name = self.get_real_name(name)
  
          if not name or name in self.__deleted_fields__:
              return None
          modified = self.__modified_data__.get(name)
          if modified is not None:
              return modified
          return self.__original_data__.get(name)