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Identification of member of Garda Síochána. | 
111.—Where, in exercise of any power or the performance of any duty conferred or imposed by or under this Act, any member of the Garda Síochána makes in a public place a request, requirement or demand of, or gives an instruction to, any person, such person shall not be bound to comply with the request, requirement, demand or instruction unless the member either— |