Provides types that support platform invoke services. Commonly Used Types: System.DllNotFoundException System.Runtime.InteropServices.DllImportAttribute System.Runtime.InteropServices.GuidAttribute System.Runtime.InteropServices.PInvokeMarshal System.Runtime.InteropServices.MarshalAsAttribute System.Runtime.InteropServices.SafeBuffer \r\n TFS ID: 1599443, GitHub SHA: https://github.com/dotnet/corefx/tree/eede273a4dfabcea608621f5e1bbf8ad00584cfb