docs: private static String getActivationId(Match match) {
          final StringBuilder result = new StringBuilder( match.getRule().getName() );
          result.append(" [");
          List< ? extends FactHandle> factHandles = match.getFactHandles();
          for ( int i = 0; i < factHandles.size(); i++ ) {
              result.append( ((InternalFactHandle) factHandles.get(i)).getId() );
              if ( i < factHandles.size() - 1 ) {
                  result.append( ", " );
              }
          }
          return result.append( "]" ).toString();
      }