code: func enforcePodContainerConstraints(container *corev1.Container, requiredSet, missingSet sets.String) {
  	requests := container.Resources.Requests
  	limits := container.Resources.Limits
  	containerUsage := podComputeUsageHelper(requests, limits)
  	containerSet := quota.ToSet(quota.ResourceNames(containerUsage))
  	if !containerSet.Equal(requiredSet) {
  		difference := requiredSet.Difference(containerSet)
  		missingSet.Insert(difference.List()...)
  	}
  }
docs: // enforcePodContainerConstraints checks for required resources that are not set on this container and
  // adds them to missingSet.