<PackageReference Include="NETStandard.Library" Version="2.0.2" />

System.Net.Http.Headers.RetryConditionHeaderValue

namespace System.Net.Http.Headers { public class RetryConditionHeaderValue : ICloneable { public DateTimeOffset? Date { get; } public TimeSpan? Delta { get; } public RetryConditionHeaderValue(DateTimeOffset date); public RetryConditionHeaderValue(TimeSpan delta); public static RetryConditionHeaderValue Parse(string input); public static bool TryParse(string input, out RetryConditionHeaderValue parsedValue); } }