assert clone != null: Debug.show(vparam, " - ", clasz, " - ", member);
assert clone != null: Debug.show(vparam, clasz, member);
    private Symbol getClassVParam(Symbol vparam) {        if (paramSubst == null) return vparam;        Symbol clone = (Symbol)paramSubst.lookupSymbol(vparam);        assert clone != null: Debug.show(vparam, " - ", clasz, " - ", member);        return clone;    }