src/vs/workbench/services/authentication/browser/authenticationService.ts/AuthenticationService/getLabel
class AuthenticationService:	getLabel(id: string): string {
		const authProvider = this._authenticationProviders.get(id);
		if (authProvider) {
			return authProvider.label;
		} else {
			throw new Error(`No authentication provider '${id}' is currently registered.`);
		}
	}