<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_friends(self, **params):
 """Return a UserList of Redditors with whom the user is friends."""

        url = self.config['friends']
        return self.request_json(url, params=params)[0]