public IGate AddGate(IGate g)
{
if (g.Type.IsFixed())
{
return(g);
}
else
{
var key = g.CacheKey;
// try to find, including parents
IGate r = Lookup(key);
if (null == r)
{
// add to cache
var gateid = "#" + _seed++;
g.Freeze(gateid);
_map[key] = r = g;
_list.Add(r);
}
return(r);
}
}