internal override TypeDescription Clone(Dictionary <TypeDescription, TypeDescription> backRefLookup)
{
if (backRefLookup.ContainsKey(this))
{
return(backRefLookup[this]);
}
var ret = new ListTypeDescription();
backRefLookup[this] = ret;
ret.Contains = Contains.Clone(backRefLookup);
ret.ForType = ForType;
return(ret);
}