Can not build thisJoinPoint lazily for this advice since it has no suitable guard
<p>What is a "suitable guard" and what does it look like? </p>

<p><a href="https://stackoverflow.com/questions/20930098/spring-aop-error-can-not-build-thisjoinpoint-lazily-for-this-advice">Linked this question</a> because it refers to the same compiler message and the answer mentions a guard but not how to create one. Looked through the AspectJ docs but did not find and answer there.</p>