code: func AddCustomGlobalFlags(fs *pflag.FlagSet) {
  	// Lookup flags in global flag set and re-register the values with our flagset.
  
  	// Adds flags from k8s.io/kubernetes/pkg/cloudprovider/providers.
  	globalflag.Register(fs, "cloud-provider-gce-lb-src-cidrs")
  
  	// Adds flags from k8s.io/apiserver/pkg/admission.
  	globalflag.Register(fs, "default-not-ready-toleration-seconds")
  	globalflag.Register(fs, "default-unreachable-toleration-seconds")
  }
docs: // AddCustomGlobalFlags explicitly registers flags that internal packages register
  // against the global flagsets from "flag". We do this in order to prevent
  // unwanted flags from leaking into the kube-apiserver's flagset.