// indicating the request was approved and should be issued by the signer.
  //
  // A "Denied" condition is added via the /approval subresource,
  // indicating the request was denied and should not be issued by the signer.
  //
  // A "Failed" condition is added via the /status subresource,
  // indicating the signer failed to issue the certificate.
  //
  // Approved and Denied conditions are mutually exclusive.

  // For example, a user may request that a pod is deleted in 30 seconds. The Kubelet will react
  // by sending a graceful termination signal to the containers in the pod. After that 30 seconds,
  // the Kubelet will send a hard termination signal (SIGKILL) to the container and after cleanup,
  // remove the pod from the API. In the presence of network partitions, this object may still

  //
  // Certificate signers may not honor this field for various reasons:
  //
  //   1. Old signer that is unaware of the field (such as the in-tree
  //      implementations prior to v1.22)
  //   2. Signer whose configured maximum is shorter than the requested duration
  //   3. Signer whose configured minimum is longer than the requested duration
  //

  // If this value is nil, the default grace period will be used instead.
  // The grace period is the duration in seconds after the processes running in the carp are sent
  // a termination signal and the time when the processes are forcibly halted with a kill signal.
  // Set this value longer than the expected cleanup time for your process.
  // Defaults to 30 seconds.
  // +optional
  optional int64 terminationGracePeriodSeconds = 4;

  // the kill signal (no opportunity to shut down).
  // If this value is nil, the default grace period will be used instead.
  // The grace period is the duration in seconds after the processes running in the pod are sent
  // a termination signal and the time when the processes are forcibly halted with a kill signal.
  // Set this value longer than the expected cleanup time for your process.