code: def clear_description(self):
          
          if (self.get_domain_metadata().is_read_only() or
                  self.get_domain_metadata().is_required()):
              raise errors.NoAccess()
          self._my_map['domain'] = self._domain_metadata['default_string_values'][0]
docs: Clears the description.
  
          raise:  NoAccess - ``description`` cannot be modified
          *compliance: mandatory -- This method must be implemented.*