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The current code simply exits without continuing to renew the lease, which means participants using a slower lease duration might have to wait multiple minutes before a new leader is elected. Allow an optional flag to be set on LeaderElectionConfig that will release the lease when the calling context is cancelled. Callers *must* ensure their lease guarded code has completed before the context is cancelled, or other processes may acquire the lease before this lease has released. Add an example command that demonstrates how cancellation could be done. As a convenience to users, make event recorder optional - not all users of the lock code will need a recorder. Kubernetes-commit: 09890b6c48da8e85237a5674d6256900f482b0a5