code: def teardown(self):
          '''Teardown trust domain by removing trusted devices.'''
  
          for device in self.devices:
              self._remove_trustee(device)
              self._populate_domain()
          self.domain = {f teardown(self):
          '''Teardown trust domain by removing trusted devices.'''
  
          for device in self.devices:
              self._remove_trustee(device)
              self._populate_domain()
          self.domain = {}
docs: Teardown trust domain by removing trusted devices.