src/vs/code/browser/workbench/workbench.ts/LocalStorageCredentialsProvider/doGetPassword
class LocalStorageCredentialsProvider:	private async doGetPassword(service: string, account?: string): Promise<string | null> {
		for (const credential of this.credentials) {
			if (credential.service === service) {
				if (typeof account !== 'string' || account === credential.account) {
					return credential.password;
				}
			}
		}

		return null;
	}