code: public static boolean isDurableProc(String procName) {
          SystemProcedureCatalog.Config sysProc = SystemProcedureCatalog.listing.get(procName);
          return sysProc == null || sysProc.isDurable();
      }
docs: Return if given proc is durable if its a sysproc SystemProcedureCatalog is consulted. All non sys procs are all
  durable.
  
  @param procName
  @return true if proc is durable for non sys procs return true (durable)