in src/main/java/org/apache/sling/junit/performance/runner/PerformanceRunner.java [351:365]
private List<Listener> readListenersFromStaticFields() throws Exception {
List<Listener> listeners = new ArrayList<Listener>();
for (FrameworkField field : getTestClass().getAnnotatedFields(Listen.class)) {
Listener listener = (Listener) field.get(null);
if (listener == null) {
throw new IllegalArgumentException("Field " + field.getName() + " should not be null");
}
listeners.add(listener);
}
return listeners;
}