No civil proceeding lies against the Commonwealth or a protected person in relation to anything done, or omitted to be done, in good faith:
(a) by a protected person in the performance or purported performance of a function, or the exercise or purported exercise of a power, conferred by this Act; or
(b) by a person in providing, or purporting to provide, assistance, information or a document to a protected person, as a result of a request, direction or other requirement made by a protected person in the performance or purported performance of a function, or the exercise or purported exercise of a power, conferred by this Act.