@classmethod
  @gen.engine
  def ReleaseLock(cls, client, viewpoint_id, lock, callback):
    yield gen.Task(lock.Release, client)
    ViewpointLockTracker.RemoveViewpointId(viewpoint_id)
    callback()
Releases a previously acquired lock on the specified viewpoint.
dataset/ETHPy150Open viewfinderco/viewfinder/backend/db/viewpoint.py/Viewpoint.ReleaseLock