code: 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;
      }
docs: There are no user specified parameters.
  @param ctx Internal parameter not visible the end-user.
  @return {@link org.voltdb.VoltSystemProcedure#STATUS_SCHEMA}