code: def remove_null_proxy_kwarg(func):
      
      def wrapper(*args, **kwargs):
          if 'proxy' in kwargs:
              # if kwargs['proxy'] is None:
              del kwargs['proxy']
              # else:
              #    raise InvalidArgument('Manager sessions cannot be called with Proxies. Use ProxyManager instead')
          return func(*args, **kwargs)
      return wrapper
docs: decorator, to remove a 'proxy' keyword argument. For wrapping certain Manager methods