<PackageReference Include="NETStandard.Library" Version="2.0.3" />

System.Linq.Expressions.SymbolDocumentInfo

public class SymbolDocumentInfo
namespace System.Linq.Expressions { public class SymbolDocumentInfo { public virtual Guid DocumentType { get; } public string FileName { get; } public virtual Guid Language { get; } public virtual Guid LanguageVendor { get; } } }