in src/main/java/org/apache/sling/security/impl/ReferrerFilter.java [538:547]
public void printConfiguration(final PrintWriter pw) {
pw.println("Current Apache Sling Referrer Filter Allowed Referrers:");
pw.println();
for (final URL url : allowedUriReferrers) {
pw.println(url.toString());
}
for (final Pattern pattern : allowedRegexReferrers) {
pw.println(pattern.toString());
}
}