ADMINISTRATIVE LAW - RIGHT TO INFORMATION REFUSAL OF ACCESS - NONEXISTENT OR UNLOCATABLE DOCUMENTS - request for documents about applicant - whether agency has conducted reasonable searches - whether access to documents may be refused on the basis documents are nonexistent or unlocatable - section 67(1) of the Information Privacy Act 2009 (Qld) and sections 47(3)(e) and 52 of the Right to Information Act 2009 (Qld)