/// <summary>
 /// <para>Authenticate using given <paramref name="login"/> and <paramref name="password"/> with <see cref="AclSchemes.Digest"/> scheme.</para>
 /// <para>The function can be called multiple times if the application wants to authenticate using different <paramref name="login"/> and <paramref name="password"/>.</para>>
 /// </summary>
 public static void AddAuthenticationInfo(this IZooKeeperClient client, [NotNull] string login, [NotNull] string password) =>
 client.AddAuthenticationInfo(AuthenticationInfo.Digest(login, password));
 public static IVostokZooKeeperClientBuilder AddAuthenticationInfo(this IVostokZooKeeperClientBuilder builder, [NotNull] string login, [NotNull] string password)
 => builder.AddAuthenticationInfo(AuthenticationInfo.Digest(login, password));