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

System.Net.Http.Headers.NameValueHeaderValue

namespace System.Net.Http.Headers { public class NameValueHeaderValue : ICloneable { public string Name { get; } public string Value { get; set; } protected NameValueHeaderValue(NameValueHeaderValue source); public NameValueHeaderValue(string name); public NameValueHeaderValue(string name, string value); public static NameValueHeaderValue Parse(string input); public static bool TryParse(string input, out NameValueHeaderValue parsedValue); } }