[ Version ( since = "0.9.0" ) ]
public AuthorizationDomain authorization_domain { get; construct; }
The authorization domain for the batch operation, against which the authorizer for the service should be authorized.
This may be null if authorization is not needed for any of the requests in the batch operation.
All requests in the batch operation must be authorizable under this single authorization domain. If requests need different authorization domains, they must be performed in different batch operations.