'This overridable method is called for each result (item or request)
returned by the spider, and it\'s intended to perform any last time
processing required before returning the results to the framework core,
for example setting the item GUIDs. It receives a list of results and
the response which originated that results. It must return a list of
results (Items or Requests).'

def process_results(self, response, results):

    return results
