human
Solve the following python programming problem given the following code:
@ httpretty.activate 
def _test__get_file_tree(self, addon_short_name) : 
    requests_made = [] 
    def callback(request, uri, headers) : 
        path = request.querystring ['path'] [0] 
        requests_made.append (path) 
        return (200, headers, json.dumps (self.RESP_MAP [path])) 
for path in self.RESP_MAP.keys () : 
        url = waterbutler_url_for ('metadata', provider = addon_short_name, path = path, node = path.src, user = self.user, view_only = True) 
        httpretty.register_uri (httpretty.GET, url, body = callback, content_type = 'applcation/json') 
addon = self.src.get_or_add_addon (addon_short_name, auth = self.auth) 
    root = { 
        'path' : '/', 
        'name' : '', 
        'kind' : 'folder', 
} 
    file_tree = addon._get_file_tree (root, self.user) 
    assert_equal (FILE_TREE, file_tree) 
    assert_equal (requests_made, ['/', '/qwerty']) 

    
    

    Fix the buggy line: url = waterbutler_url_for ('metadata', provider = addon_short_name, path = path, node = path.src, user = self.user, view_only = True)
assistant
#Here is Python code to fix the buggy line: url = waterbutler_url_for ('metadata', provider = addon_short_name, path = path, node = path.

url = waterbutler_url_for ('metadata', provider = addon_short_name, path = path, node = self.src, user = self.user, view_only = True)