<PackageReference Include="NETStandard.Library" Version="2.0.1" />

System.Text.UnicodeEncoding

public class UnicodeEncoding : Encoding
namespace System.Text { public class UnicodeEncoding : Encoding { public const int CharSize = 2; public UnicodeEncoding(); public UnicodeEncoding(bool bigEndian, bool byteOrderMark); public UnicodeEncoding(bool bigEndian, bool byteOrderMark, bool throwOnInvalidBytes); } }