docs: def reset_field_value(self, name):
          """
          Resets value of a field
          """
          name = self.get_real_name(name)
  
          if name and self._can_write_field(name):
              if name in self.__modified_data__:
                  del self.__modified_data__[name]
  
              if name in self.__deleted_fields__:
                  self.__deleted_fields__.remove(name)
  
              try:
                  self.__original_data__[name].clear_modified_data()
              except (KeyError, AttributeError):
                  pass