code: public static final boolean isZOS()
      {
          if (tc.isEntryEnabled())
              Tr.entry(tc, "isZOS");
          if (tc.isEntryEnabled())
              Tr.exit(tc, "isZOS", new Boolean(_isZOS));
          return _isZOS;
      }
docs: Gets the isZOS flag.
  
  @return boolean Flag to indicate if this is a zOS platform.