src/vs/workbench/contrib/preferences/browser/preferencesRenderers.ts/UnsupportedSettingsRenderer/handlePolicyConfiguration
class UnsupportedSettingsRenderer:	private handlePolicyConfiguration(setting: ISetting, configuration: IConfigurationPropertySchema, markerData: IMarkerData[]): boolean {
		if (!configuration.policy) {
			return false;
		}
		if (this.configurationService.inspect(setting.key).policyValue === undefined) {
			return false;
		}
		if (this.settingsEditorModel.configurationTarget === ConfigurationTarget.DEFAULT) {
			return false;
		}
		markerData.push({
			severity: MarkerSeverity.Hint,
			tags: [MarkerTag.Unnecessary],
			...setting.range,
			message: nls.localize('unsupportedPolicySetting', "This setting cannot be applied because it is configured in the system policy.")
		});
		return true;
	}