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

System.Runtime.InteropServices.UnmanagedFunctionPointerAttribute

namespace System.Runtime.InteropServices { public sealed class UnmanagedFunctionPointerAttribute : Attribute { public bool BestFitMapping; public CharSet CharSet; public bool SetLastError; public bool ThrowOnUnmappableChar; public CallingConvention CallingConvention { get; } public UnmanagedFunctionPointerAttribute(CallingConvention callingConvention); } }