<PackageReference Include="Microsoft.CSharp" Version="4.6.0-preview9.19421.4" />

PREDEFATTR

enum PREDEFATTR
namespace Microsoft.CSharp.RuntimeBinder.Semantics { internal enum PREDEFATTR { PA_ATTRIBUTEUSAGE, PA_OBSOLETE, PA_CLSCOMPLIANT, PA_CONDITIONAL, PA_REQUIRED, PA_FIXED, PA_DEBUGGABLE, PA_ASSEMBLYFLAGS, PA_ASSEMBLYVERSION, PA_ASSEMBLYCULTURE, PA_NAME, PA_DLLIMPORT, PA_COMIMPORT, PA_GUID, PA_IN, PA_OUT, PA_STRUCTOFFSET, PA_STRUCTLAYOUT, PA_PARAMARRAY, PA_COCLASS, PA_DEFAULTCHARSET, PA_DEFAULTVALUE, PA_UNMANAGEDFUNCTIONPOINTER, PA_COMPILATIONRELAXATIONS, PA_RUNTIMECOMPATIBILITY, PA_FRIENDASSEMBLY, PA_KEYFILE, PA_KEYNAME, PA_DELAYSIGN, PA_DEFAULTMEMBER, PA_TYPEFORWARDER, PA_EXTENSION, PA_COUNT } }