81. Exemption from arrest and personal appearance.—
In a suit instituted against a public officer
in respect of any act purporting to be done by him in his official capacity—
(a) the defendant shall not be liable to arrest nor his property to attachment otherwise than in
execution of a decree, and,
(b) where the Court is satisfied that the defendant cannot absent himself from his duty without
detriment to the public service, it shall exempt him from appearing in person.