<PackageReference Include="NETStandard.Library" Version="2.0.0" />

System.Text.UTF32Encoding

public sealed class UTF32Encoding : Encoding
namespace System.Text { public sealed class UTF32Encoding : Encoding { public UTF32Encoding(); public UTF32Encoding(bool bigEndian, bool byteOrderMark); public UTF32Encoding(bool bigEndian, bool byteOrderMark, bool throwOnInvalidCharacters); } }