src/vs/workbench/services/userDataSync/browser/userDataSyncWorkbenchService.ts/UserDataSyncWorkbenchService/isSupportedAuthenticationProviderId
class UserDataSyncWorkbenchService:	private isSupportedAuthenticationProviderId(authenticationProviderId: string): boolean {
		return this.authenticationProviders.some(({ id }) => id === authenticationProviderId);
	}