code: private void setCommonHeaders() {
          String xPoweredByValue = null;
          if (!WCCustomProperties.DISABLE_X_POWERED_BY){
              if (WCCustomProperties.X_POWERED_BY==null){
                  xPoweredByValue = getXPoweredbyHeader();
              }
              else {
                  xPoweredByValue = WCCustomProperties.X_POWERED_BY;
              }
              if (xPoweredByValue!=null)
                  setHeader(WebContainerConstants.X_POWERED_BY_KEY,xPoweredByValue);
          }
      }
docs: Added by V8 merge: