Use JsonSubType union type in method parameters and return type

[Artur-]

Describe your motivation

If you have

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY)
@JsonSubTypes({ @JsonSubTypes.Type(value = AddEvent.class, name = "add"),
        @JsonSubTypes.Type(value = UpdateEvent.class, name = "update") })
public interface BaseEvent { public int baseValue; }
public class AddEvent implements BaseEvent { private String addValue;}
public class UpdateEvent implements BaseEvent { private String updateValue;}

then you get

interface BaseEvent {
    baseValue: number;
}

interface UpdateEvent extends BaseEvent {
    updateValue: string;
    "@type": "update";
}

interface AddEvent extends BaseEvent {
    addValue: string;
    "@type": "add";
}

which is expected but then you have

   public void foo(BaseEvent bar) {}

you get

async function foo(bar: BaseEvent)

Describe the solution you'd like

The parameter type should not be BaseEvent but instead BaseEventUnion. The same for the return type

Describe alternatives you've considered

No response

Additional context

No response

[tarekoraby]

@cromoteca, addressing this issue was needed to enable external filters in AutoGrid. Right?