code: def wait_for_js(function):
      
  
      @functools.wraps(function)
      def wrapper(*args, **kwargs):  # pylint: disable=missing-docstring
  
          # If not a method, then just call the function
          if len(args) < 1:
              return function(*args, **kwargs)
  
          # Otherwise, retrieve `self` as the first arg
          else:
              self = args[0]
  
              # If the class has been decorated by one of the
              # JavaScript dependency decorators, it should have
              # a `wait_for_js` method
              if hasattr(self, 'wait_for_js'):
                  self.wait_for_js()
  
              # Call the function
              return function(*args, **kwargs)
  
      return wrapper
docs: Method decorator that waits for JavaScript dependencies before executing `function`.
      If the function is not a method, the decorator has no effect.
  
      Args:
          function (callable): Method to decorate.
  
      Returns:
          Decorated method