Swift class from string that uses generics

I am trying to instantiate a class from string, but it is not working because of generics.

I have this class declaration:

class PollSummaryView<T: PollSummary>: UIView {}

And then many subclasses:

class TextPollSummaryView: PollSummaryView<TextPollSummary> {}

class ChartingPollSummaryView: PollSummaryView<ChartPollSummary> {}

Then, I am trying to instantiate doing this:

let contentClassName = "\(summary.poll.type.rawValue)PollSummaryView"
let contentClass = classFromString(contentClassName) as? PollSummaryView.Type

But it is getting nil. Also tried this with same results:

let contentClassName = "\(summary.poll.type.rawValue)PollSummaryView"
let contentClass = classFromString(contentClassName) as? PollSummaryView<PollSummary>.Type

Just in case, this the classFromString snippet:

func classFromString(_ className: String) -> AnyClass? {
    let namespace = Bundle.main.infoDictionary!["CFBundleExecutable"] as! String;
    let cls: AnyClass? = NSClassFromString("\(namespace).\(className)");
    return cls;
}

In Java Android I am doing this:

  public static @Nullable
    <T extends PollSummaryView> T createView(PollSummary summary, Context context) {
        try {
            String simpleClassName = StringUtils.capitalize(summary.getPoll().getType().name()).concat("PollSummaryView");
            String className = String.format("%s.%s", getPackage(), simpleClassName);
            Class<? extends PollSummaryView> clazz = Class.forName(className).asSubclass(PollSummaryView.class);
            return (T) clazz.getConstructor(summary.getClass(), Context.class).newInstance(summary, context);
        } catch (Exception e) {
            return null;
        }
    }

And it works, but warning about an unchecked cast.

Is there any Swift expert over there?

Many thanks!