docs: def reset(self):
          """
          Resets the value of config item to its default value.
          """
          old_value = self._value
          old_raw_str_value = self.raw_str_value
  
          self._value = not_set
          self.raw_str_value = not_set
  
          new_value = self._value
  
          if old_value is not_set:
              # Nothing to report
              return
  
          if self.section:
              self.section.dispatch_event(
                  self.section.hooks.item_value_changed,
                  item=self,
                  old_value=old_value,
                  new_value=new_value,
                  old_raw_str_value=old_raw_str_value,
                  new_raw_str_value=self.raw_str_value,
              )