Unreasonable refusal of adjournment application at the AAT

The following decision illustrates the principles underpinning the characterisation of what is unreasonable if the AAT refuses an adjournment application.
http://www.judgments.fedcourt.gov.au/judgments/Judgments/fca/single/2019/2019fca0040
BKQ16 v Minister for Immigration and Border Protection [2019] FCA 40
...