Can't use DTO for by-name params with RequestBuilder

[dttrian]

I'd like to model the params of my requests as DTOs and used them to populate the params of JSON RPC requests.
For example if I define this DTO:

class PlayerCreationDTO {
    String firstName;
    String lastName;
}

I would like to do something like this:

PlayerCreationDTO playerCreationDTO = new PlayerCreationDTO();

...

Player player = client.createRequest()
        .method("findByInitials")
        .id(43121)
        .paramsByName(playerCreationDTO)
        .returnAs(Player.class)
        .execute();

It doens't work because the paramsByName method does not exist (of course).
There exists a params method but it implements params "by-position" and not "by-name".

Is there a way to achieve what I want with the current version of the library?