code: func (config *DeferredLoadingClientConfig) Namespace() (string, bool, error) {
  	mergedKubeConfig, err := config.createClientConfig()
  	if err != nil {
  		return "", false, err
  	}
  
  	ns, overridden, err := mergedKubeConfig.Namespace()
  	// if we get an error and it is not empty config, or if the merged config defined an explicit namespace, or
  	// if in-cluster config is not possible, return immediately
  	if (err != nil && !IsEmptyConfig(err)) || overridden || !config.icc.Possible() {
  		// return on any error except empty config
  		return ns, overridden, err
  	}
  
  	if len(ns) > 0 {
  		// if we got a non-default namespace from the kubeconfig, use it
  		if ns != "default" {
  			return ns, false, nil
  		}
  
  		// if we got a default namespace, determine whether it was explicit or implicit
  		if raw, err := mergedKubeConfig.RawConfig(); err == nil {
  			// determine the current context
  			currentContext := raw.CurrentContext
  			if config.overrides != nil && len(config.overrides.CurrentContext) > 0 {
  				currentContext = config.overrides.CurrentContext
  			}
  			if context := raw.Contexts[currentContext]; context != nil && len(context.Namespace) > 0 {
  				return ns, false, nil
  			}
  		}
  	}
  
  	klog.V(4).Infof("Using in-cluster namespace")
  
  	// allow the namespace from the service account token directory to be used.
  	return config.icc.Namespace()
  }
docs: // Namespace implements KubeConfig