extensions/microsoft-authentication/src/AADHelper.ts/AzureActiveDirectoryService/storeTokenData
class AzureActiveDirectoryService:	private async storeTokenData(): Promise<void> {
		const serializedData: IStoredSession[] = this._tokens.map(token => {
			return {
				id: token.sessionId,
				refreshToken: token.refreshToken,
				scope: token.scope,
				account: token.account
			};
		});

		await this._keychain.setToken(JSON.stringify(serializedData));
	}