<PackageReference Include="Microsoft.CSharp" Version="4.7.0" />

CError

class CError
using System.Globalization; namespace Microsoft.CSharp.RuntimeBinder.Errors { internal class CError { private string _text; public string Text => _text; private static string ComputeString(ErrorCode code, string[] args) { return string.Format(CultureInfo.InvariantCulture, ErrorFacts.GetMessage(code), args); } public void Initialize(ErrorCode code, string[] args) { _text = ComputeString(code, args); } } }