code: func (actor Actor) GetStack(guid string) (Stack, Warnings, error) {
  	stack, warnings, err := actor.CloudControllerClient.GetStack(guid)
  
  	if _, ok := err.(ccerror.ResourceNotFoundError); ok {
  		return Stack{}, Warnings(warnings), actionerror.StackNotFoundError{GUID: guid}
  	}
  
  	return Stack(stack), Warnings(warnings), err
  }
docs: // GetStack returns the stack information associated with the provided stack GUID.