docs: public void setDecoratedZOS() { // 331761A
  
          if (xMemSetupThread == null) {
              try {
                  final Class xMemCRBridgeClass = Class.forName("com.ibm.ws390.xmem.XMemCRBridgeImpl");
                  xMemSetupThread = xMemCRBridgeClass.getMethod("setupThreadStub", new Class[] { java.lang.Object.class });
              } catch (Throwable t) {
                  if (tc.isEventEnabled())
                      Tr.event(tc, "Unexpected exception caught accessing XMemCRBridgeImpl.setupThreadStub", t);
                  // Alex Ffdc.log(t, this, "com.ibm.ws.util.ThreadPool.setDecoratedZOS",
                  // "893"); // D477704.2
              }
          }
          if (xMemSetupThread != null) {
              _isDecoratedZOS = true;
          }
      }