Section 31. A suit or prosecution shall not be entertained in any Court against any cantonment authority, author

31. A suit or prosecution shall not be entertained in any Court against any cantonment authority, authority appointed under the last foregoing section, Cantonment Magistrate or commanding officer for anything in good faith done or purporting to be done in pursuance of powers conferred by or under this Act on such authority, Magistrate or officer, whether the thing done was or was not authorized by the powers so conferred.