code: public IAgendaStatsData getStatsForRule( String ruleName ) {
          AgendaStatsData data = this.agendaStats.getRuleStats( ruleName );
          return ( data == null ) ? null : data;
      }
docs: /* (non-Javadoc)
  @see org.drools.core.management.KnowledgeSessionMonitoringMBean#getStatsForRule(java.lang.String)