ADMINISTRATIVE LAW - RIGHT TO INFORMATION - REFUSAL OF ACCESS - NONEXISTENT DOCUMENTS - applicant submits further documents would have been created by police in investigating allegations against him - agency relies on explanation of its recordkeeping practices to explain nonexistence of further documents - whether there are reasonable grounds to be satisfied that further documents do not exist - whether access may be refused to nonexistent documents under section 67(1) of the Information Privacy Act 2009 (Qld) and sections 47(3)(e) and 52(1)(a) of the Right to Information Act 2009 (Qld)