human
Solve the following python programming problem given the following code:
def list_at_subscription_level(self, filter = None, custom_headers = { 
    
}, raw = False, **operation_config) : 
    '
        Gets all the management locks of a subscription.

        :param filter: The filter to apply on the operation.
        :type filter: str
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :rtype: :class:`ManagementLockObjectPaged
         <azure.mgmt.resource.locks.models.ManagementLockObjectPaged>`
        ' 
    def internal_paging(next_link = None, raw = False) : 
        if (not next_link) : 
            url = '/subscriptions/{subscriptionId}/providers/Microsoft.Authorization/locks' 
            path_format_arguments = { 
                'subscriptionId' : self._serialize.url ('self.config.subscription_id', self.config.subscription_id, 'str'), 
} 
            url = self._client.format_url (url, ** path_format_arguments) 
            query_parameters = { 
                
} 
            if (filter is not None) : 
                query_parameters ['$filter'] = self._serialize.query ('filter', filter, 'str') 
query_parameters ['api-version'] = self._serialize.query ('self.config.api_version', self.config.api_version, 'str') 
else : 
            url = next_link 
            query_parameters = { 
                
} 
header_parameters = { 
            
} 
        header_parameters ['Content-Type'] = 'application/json.
charset=utf-8' 
        if self.config.generate_client_request_id : 
            header_parameters ['x-ms-client-request-id'] = str (uuid.uuid1 ()) 
if custom_headers : 
            header_parameters.update (custom_headers) 
if (self.config.accept_language is not None) : 
            header_parameters ['accept-language'] = self._serialize.header ('self.config.accept_language', self.config.accept_language, 'str') 
request =...

    
    

    Fix the buggy line: return self
assistant
#Here is Python program to fix the buggy line: return self
.

return client_raw_response