code: func ExtractResourceValueByContainerNameAndNodeAllocatable(fs *v1.ResourceFieldSelector, pod *v1.Pod, containerName string, nodeAllocatable v1.ResourceList) (string, error) {
  	realContainer, err := findContainerInPod(pod, containerName)
  	if err != nil {
  		return "", err
  	}
  
  	container := realContainer.DeepCopy()
  
  	MergeContainerResourceLimits(container, nodeAllocatable)
  
  	return ExtractContainerResourceValue(fs, container)
  }
docs: // ExtractResourceValueByContainerNameAndNodeAllocatable extracts the value of a resource
  // by providing container name and node allocatable