extensions/microsoft-authentication/src/betterSecretStorage.ts/BetterTokenStorage/deleteAll
class BetterTokenStorage:	async deleteAll(): Promise<void> {
		const tokens = await this.getTokens();
		const promises = [];
		for (const [key] of tokens) {
			promises.push(this.delete(key));
		}
		await Promise.all(promises);
	}