private static int FtypeKind(Class ftype)
 {
     if (ftype.Primitive)
     {
         return(Wrapper.forPrimitiveType(ftype).ordinal());
     }
     else if (VerifyType.isNullReferenceConversion(typeof(Object), ftype))
     {
         return(FT_UNCHECKED_REF);
     }
     else
     {
         return(FT_CHECKED_REF);
     }
 }