// Upon an error on watch channel
						// re-init the watch channel.
						goto outerLoop
					}
					for _, event := range watchResp.Events {
						isCreateEvent := event.IsModify() || event.IsCreate()
						isDeleteEvent := event.Type == etcd.EventTypeDelete

						switch {
						case isCreateEvent:
							ch <- iamWatchEvent{
								isCreated: true,
								keyPath:   string(event.Kv.Key),
							}

        tf.math.invert_permutation.
    *   Add `tf.math.sobol_sample` op.
    *   Add `tf.math.xlog1py`.
    *   Add `tf.math.special.{dawsn,expi,fresnel_cos,fresnel_sin,spence}`.
    *   Add a Modified Discrete Cosine Transform (MDCT) and its inverse to
        `tf.signal`.
*   TPU Enhancements:
    *   Refactor `TpuClusterResolver` to move shared logic to a separate pip
        package.