One soap request with internal requests. Best implementation

I have soap service with method:

 @Override
  public SomeResponse someRequest(SomeRequest request) {
      org.w3c.dom.Element any = request.getMessagePrimaryContent().getAny();
  }

any - may contain any "internal request". I know all types of any. For example: ImportBooksRequest, ImportCDRequest, ImportSongsRequest And I can unmarshale any to concrete class:

 if (any.getLocalName().equals(ImportBooksRequest.class.getSimpleName())) {
    ImportBooksRequest importBooksRequest = marshaler.unMarshal(any, ImportBooksRequest.class);
   } else if(any.getLocalName().equals(ImportCDRequest.class.getSimpleName())){
    ImportCDRequest importCDRequest = marshaler.unMarshal(any, ImportBooksRequest.class);
   } else if(any.getLocalName().equals(ImportSongsRequest.class.getSimpleName())){
    ImportSongsRequest importSongsRequest= marshaler.unMarshal(any, ImportSongsRequest.class);
   }

And after that I need redirect request to concrete request. Now I Use Handlers:

someRequestHandlersResolver.getSomeRequestHandler(any.getLocalName()).process(request);

In someRequestHandlersResolver I have hadlers for each concreate request

@Component
public class SomeRequestHandlersResolverImpl implements SomeRequestHandlersResolver {

  private Map<String, SomeRequestHandler> map = new HashMap<>();

  public SomeRequestHandlersResolverImpl(ImportBooksRequest importBooksRequest, ImportCDRequest importCDRequest, ImportSongsRequest importSongsRequest) {
    map.put(ImportBooksRequest.class.getSimpleName(), importBooksRequest);
    map.put(ImportCDRequest.class.getSimpleName(), importCDRequest);
    map.put(ImportSongsRequest.class.getSimpleName(), importSongsRequest);
  }

  @Override
  public SomeRequestHandler getSomeRequestHandler(String type) {
    SomeRequestHandler someRequestHandler = map.get(type);
    if (someRequestHandler == null)
      throw new IllegalArgumentException("Invalid SomeRequest type: " + type);
    return someRequestHandler;
  }
}

I'm not completely sure that this is correct. Maybe there are other patterns or ways to implement this?