docs: def render(self, tmpl_name, request_env):
          """
          Render the specified template and return the output.
  
          Args:
              tmpl_name (str): file name of the template
              request_env (dict): request environment
  
  
          Returns:
              str - the rendered template
          """
          return super(WebApplication, self).render(tmpl_name, request_env)