code: @Override
      public void logLegacyMessage() {
          // 366860 - if we're on the z/os CR, use the legacy message service
          if (getHttpConfig().isControlRegion() && writingHeaders()) {
              HttpPlatformUtils utils = (HttpPlatformUtils) HttpDispatcher.getFramework().lookupService(HttpPlatformUtils.class);
              if (null != utils) {
                  utils.logLegacyMessage(this);
              }
          }
      }
docs: /*
  @see
  com.ibm.ws.http.channel.internal.HttpServiceContextImpl#logLegacyMessage()