code: def get_user_id(self, provider, info):
          "Return unique identifier from the profile info."
          id_key = self.provider_id or 'id'
          result = info
          try:
              for key in id_key.split('.'):
                  result = result[key]
              return result
          except KeyError:
              return Nonf get_user_id(self, provider, info):
          "Return unique identifier from the profile info."
          id_key = self.provider_id or 'id'
          result = info
          try:
              for key in id_key.split('.'):
                  result = result[key]
              return result
          except KeyError:
              return None
docs: Return unique identifier from the profile info.