public Inventor.AttributeSet getAttrSet <T>(T ob, string name)
        {
            AttributeSets attSets = InvDoc.Reflect.getProp <T, AttributeSets>(ob, "AttributeSets");
            var           ie      = attSets.OfType <AttributeSet>().Where(a => a.Name.StartsWith(name));

            return(ie.FirstOrDefault());
        }
        public Inventor.Attribute getAttrib <T>(T ob, string name)
        {
            AttributeSets attSets = InvDoc.Reflect.getProp <T, AttributeSets>(ob, "AttributeSets");
            var           ie      = attSets.OfType <AttributeSet>().Where(a => a.Name.StartsWith(name));

            foreach (var item in ie)
            {
                if (item.Count != 0)
                {
                    return(item[1]);
                }
            }
            return(null);
        }