docs: public VoltTable[] run(SystemProcedureExecutionContext ctx) {
          createAndExecuteSysProcPlan(SysProcFragmentId.PF_shutdownSync, SysProcFragmentId.PF_shutdownSyncDone);
  
          SynthesizedPlanFragment pfs[] = new SynthesizedPlanFragment[] {
                  new SynthesizedPlanFragment(SysProcFragmentId.PF_shutdownCommand, true) };
  
          executeSysProcPlanFragments(pfs, SysProcFragmentId.PF_procedureDone);
          return new VoltTable[0];
      }