in src/main/java/org/apache/sling/junit/performance/runner/PerformanceRunner.java [119:127]
private void validateListenMethodsStatic(List<Throwable> errors) {
for (FrameworkMethod method : getTestClass().getAnnotatedMethods(Listen.class)) {
if (method.isStatic()) {
continue;
}
errors.add(new Error("Method " + method.getName() + "() should be static"));
}
}