gistfile1.txt

 public override bool VisitMethodDecl(Method method)
 {
            var expansions = method.PreprocessedEntities.OfType<MacroExpansion>();

            if (expansions.Any(e => e.Text == Prefix + "_HASHCODE"
                || e.Text == Prefix + "_EQUALS"))
                method.ExplicitlyIgnore();
/* I added this */
            if (expansions.Any(e => e.Text == Prefix + "_INTERNAL")) //Flag a method as internal to an assembly
                method.Access = AccessSpecifier.Internal;   // Something like --> method.Access=internal;
/***************/
            return base.VisitMethodDecl(method);
            
}