namespace Microsoft.Identity.Client.Utils { internal static class DateTimeHelpers { public static DateTimeOffset UnixTimestampToDateTime(double unixTimestamp); public static DateTimeOffset? UnixTimestampToDateTimeOrNull(double unixTimestamp); public static string DateTimeToUnixTimestamp(DateTimeOffset dateTimeOffset); public static long CurrDateTimeInUnixTimestamp(); public static long GetDurationFromWindowsTimestamp(string windowsTimestampInFuture, ILoggerAdapter logger); public static long GetDurationFromNowInSeconds(string unixTimestampInFuture); public static long GetDurationFromManagedIdentityTimestamp(string dateTimeStamp); public static DateTimeOffset? DateTimeOffsetFromDuration(long? duration); public static DateTimeOffset DateTimeOffsetFromDuration(long duration); } }