src/vs/workbench/api/browser/mainThreadAuthentication.ts/MainThreadAuthentication/$registerAuthenticationProvider
class MainThreadAuthentication:	async $registerAuthenticationProvider(id: string, label: string, supportsMultipleAccounts: boolean): Promise<void> {
		const provider = new MainThreadAuthenticationProvider(this._proxy, id, label, supportsMultipleAccounts, this.notificationService, this.storageService, this.quickInputService, this.dialogService);
		this.authenticationService.registerAuthenticationProvider(id, provider);
	}