You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: validate.go
    path of file: ./repos/kubeedge/vendor/k8s.io/kubernetes/pkg/security/apparmor
    
    the code of the file until where you have to start completion: /*
Copyright 2016 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIE
    
func (v *validator) Validate(pod *v1.Pod) error {
	if !isRequired(pod) {
		return nil
	}

	if v.ValidateHost() != nil {
		return v.validateHostErr
	}

	var retErr error
	podutil.VisitContainers(&pod.Spec, podutil.AllContainers, func(container *v1.Container, containerType podutil.ContainerType) bool {
		profile := GetProfileName(pod, container.Name)
		retErr = validation.ValidateAppArmorProfileFormat(profile)
		if retErr != nil {
			return false
		}
		// TODO(#64841): This would ideally be part of validation.ValidateAppArmorProfileFormat, but
		// that is called for API validation, and this is tightening validation.
		if strings.HasPrefix(profile, v1.AppArmorBetaProfileNamePrefix) {
			if strings.TrimSpace(strings.TrimPrefix(profile, v1.AppArmorBetaProfileNamePrefix)) == "" {
				retErr = fmt.Errorf("invalid empty AppArmor profile name: %q", profile)
				return false
			}
		}
		return true
	})

	return retErr
}