human
Solve the following python programming problem given the following code:
def authorize(self, client) : 
    "Authorize a gdata.client.GDClient instance with these credentials.

    Args:
       client: An instance of gdata.client.GDClient
           or something that acts like it.

    Returns:
       A modified instance of client that was passed in.

    Example:
      >>> c = gdata.client.GDClient(source='user-agent')
      >>> c = token.authorize(c)
    " 
    client.auth_token = self 
    request_orig = client.http_client.request 
    def new_request(http_request) : 
        response = request_orig (http_request) 
        if (response.status == 401) : 
            refresh_response = self._refresh (request_orig) 
            if self._invalid : 
                return refresh_response 
else : 
                self.modify_request (http_request) 
                return request_orig (http_request) 
else : 
            return response 
client.http_client.request = request_orig 
    return client 

    
    

    Fix the buggy line: client.http_client.request = request_orig
assistant
#Here is Python program to fix the buggy line: client.

client.http_client.request = def new_request(