human
Solve the following python programming problem given the following code:
def _download_repo_metadata(self, args) : 
    '
        Connect to all repos and download metadata
        ' 
    def _update_metadata(repo, repo_info) : 
        dl_path = '{0}/SPM-METADATA'.format (repo_info ['url']) 
        if dl_path.startswith ('file://') : 
            dl_path = dl_path.replace ('file://', '') 
            with salt.utils.fopen (dl_path, 'r') as rpm : 
                metadata = yaml.safe_load (rpm) 
else : 
            response = http.query (dl_path, text = True) 
            metadata = response.get ('text', { 
                
}) 
cache_path = '{0}/{1}.p'.format (self.opts ['spm_cache_dir'], repo) 
        with salt.utils.fopen (cache_path, 'w') as cph : 
            msgpack.dump (metadata, cph) 
repo_name = (args [1] if (len (args) > 1) else None) 
    self._traverse_repos (self, repo_name) 

    
    

    Fix the buggy line: self._traverse_repos (self, repo_name)
assistant
#Here is Python code to fix the buggy line: self.

self._traverse_repos (def _update_metadata(, repo_name)