code: func Static(relativePath, root string) gin.IRoutes {
  	return engine().Static(relativePath, root)
  }
docs: // Static serves files from the given file system root.
  // Internally a http.FileServer is used, therefore http.NotFound is used instead
  // of the Router's NotFound handler.
  // To use the operating system's file system implementation,
  // use :
  //     router.Static("/static", "/var/www")