22. Except in so far as in any particular case any privilege or immunity is waived by the Court or, when the Court is not sitting, by the President of the Court, assessors, witnesses, experts and persons performing missions by order of the Court shall enjoy:—
(a)immunity from suit and legal process in respect of things done or omitted to be done by them in the course of the performance of their missions;
(b)during the period of their missions, including the time spent on journeys in connection with their missions, the like immunity from personal arrest or detention and from seizure of their personal baggage and the like inviolability for all papers and documents as are accorded to a diplomatic agent; and
(c)during the period of their missions, including the time spent on journeys in connection with their missions, the like exemptions and privileges in respect of their personal baggage as in accordance with Article 36 of the 1961 Convention Articles are accorded to a diplomatic agent.