docs: public VoltTable[] run(SystemProcedureExecutionContext ctx) {
          VoltTable[] result = null;
  
          try {
              result = createAndExecuteSysProcPlan(SysProcFragmentId.PF_quiesce_sites,
                      SysProcFragmentId.PF_quiesce_processed_sites);
          } catch (Exception ex) {
              ex.printStackTrace();
          }
          return result;
      }