code: func (ll *LeaseLock) Update(ler LeaderElectionRecord) error {
  	if ll.lease == nil {
  		return errors.New("lease not initialized, call get or create first")
  	}
  	ll.lease.Spec = LeaderElectionRecordToLeaseSpec(&ler)
  	var err error
  	ll.lease, err = ll.Client.Leases(ll.LeaseMeta.Namespace).Update(ll.lease)
  	return err
  }
docs: // Update will update an existing Lease spec.