code: def get_client(self, provider):
          "Get instance of the OAuth client for this provider."
          if self.client_class is not None:
              return self.client_class(provider)
          return get_client(providerf get_client(self, provider):
          "Get instance of the OAuth client for this provider."
          if self.client_class is not None:
              return self.client_class(provider)
          return get_client(provider)
docs: Get instance of the OAuth client for this provider.