code: public final Set<Entry<String, L[]>> getEntries() {
          return (this.map != null)
                  ? this.map.entrySet()
                  : Collections.<Entry<String, L[]>>emptySet();
      }
docs: Returns a set of entries from the map.
  Each entry is a pair consisted of the property name
  and the corresponding list of listeners.
  
  @return a set of entries from the map