docs: def get_host(self):
          """Get resource this operator is currently executing in.
             If the operator is running on an externally
             managed resource ``None`` is returned.
  
          Returns:
              Host: Resource this operator is running on.
  
          .. versionadded:: 1.9
          """
          if hasattr(self, 'host') and self.host:
              return Host(self.rest_client.make_request(self.host), self.rest_client)