code: func (plugin *PodSecurityPolicyPlugin) ValidateInitialization() error {
  	if plugin.authz == nil {
  		return fmt.Errorf("%s requires an authorizer", PluginName)
  	}
  	if plugin.lister == nil {
  		return fmt.Errorf("%s requires a lister", PluginName)
  	}
  	return nil
  }
docs: // ValidateInitialization ensures an authorizer is set.