The case is a straightforward application of the requirement under the Criminal Appeals Act 2004 (WA) that an appellant must demonstrate error by the primary judge, and that leave to appeal will not be granted unless a ground has a reasonable prospect of succeeding. No new principle is established.
The full text is available to signed-in members, including the 2 later cases that cite this judgment.
2 of the 2 citing cases carry a classified treatment. How each court treated it is available to signed-in members.