}
	}

	for _, name := range a.DisablePlugins {
		if !registeredPlugins.Has(name) {
			errs = append(errs, fmt.Errorf("disable-admission-plugins plugin %q is unknown", name))
		}
	}

	enablePlugins := sets.NewString(a.EnablePlugins...)
	disablePlugins := sets.NewString(a.DisablePlugins...)
	if len(enablePlugins.Intersection(disablePlugins).List()) > 0 {

func (a *AdmissionOptions) Validate() []error {
	if a == nil {
		return nil
	}
	var errs []error
	if a.PluginNames != nil &&
		(a.GenericAdmission.EnablePlugins != nil || a.GenericAdmission.DisablePlugins != nil) {
		errs = append(errs, fmt.Errorf("admission-control and enable-admission-plugins/disable-admission-plugins flags are mutually exclusive"))
	}

			}
			if scenario.setEnablePlugins != nil {
				target.EnablePlugins = scenario.setEnablePlugins
			}
			if scenario.setDisablePlugins != nil {
				target.DisablePlugins = scenario.setDisablePlugins
			}
			if scenario.setAdmissionControl != nil {
				target.EnablePlugins = scenario.setAdmissionControl
			}

			actualPluginNames := target.enabledPluginNames()

	}

	// 2. Both `--admission-control` and `--disable-admission-plugins` are specified
	options = NewAdmissionOptions()
	options.PluginNames = []string{"ServiceAccount"}
	options.GenericAdmission.DisablePlugins = []string{"NodeRestriction"}
	if len(options.Validate()) == 0 {
		t.Errorf("Expect error, but got none")
	}

	// 3. PluginNames is not registered
	options = NewAdmissionOptions()