code: func (kl *Kubelet) findContainer(podFullName string, podUID types.UID, containerName string) (*kubecontainer.Container, error) {
  	pods, err := kl.containerRuntime.GetPods(false)
  	if err != nil {
  		return nil, err
  	}
  	// Resolve and type convert back again.
  	// We need the static pod UID but the kubecontainer API works with types.UID.
  	podUID = types.UID(kl.podManager.TranslatePodUID(podUID))
  	pod := kubecontainer.Pods(pods).FindPod(podFullName, podUID)
  	return pod.FindContainerByName(containerName), nil
  }
docs: // findContainer finds and returns the container with the given pod ID, full name, and container name.
  // It returns nil if not found.