/**
  * Whether current event matches any tag from {@link #tags}.
  *
  * @param event AuditEvent to test match on {@link #tags}.
  * @return true if event matches any tag from {@link #tags}, false otherwise.
  */
 private boolean matchesTag(AuditEvent event) {
   for (final Tag tag : tags) {
     if (tag.isMatch(event)) {
       return true;
     }
   }
   return false;
 }