def Abandon(self, client, callback):
    assert self.AmOwner(), self
    self._StopRenewal()
    self.expiration = 0
    self.Update(client, expected={'owner_id': self.owner_id}, callback=callback)
Marks the lock as abandoned by disabling renewal and expiring the
dataset/ETHPy150Open viewfinderco/viewfinder/backend/db/lock.py/Lock.Abandon