@gen.coroutine
  def _Update(self):
    self._identity.expires = 0
    self._identity.user_id = self._target_user_id
    yield gen.Task(self._identity.Update, self._client)
Updates the database:
dataset/ETHPy150Open viewfinderco/viewfinder/backend/op/link_identity_op.py/LinkIdentityOperation._Update