in core/src/main/java/org/apache/sling/testing/mock/sling/ResourceResolverFactoryInitializer.java [190:198]
private static <T> void registerServiceIfNotPresent(@NotNull BundleContext bundleContext, @NotNull Class<T> serviceClass,
@NotNull T instance, Dictionary<String, Object> config) {
if (bundleContext.getServiceReference(serviceClass.getName()) == null) {
MockOsgi.registerInjectActivateService(instance, bundleContext, config);
}
else if (log.isDebugEnabled()) {
log.debug("registerServiceIfNotPresent: Skip registering {} ({}) because already present, bundleContext={}", instance.getClass(), serviceClass, bundleContext);
}
}