AdditionalDataBuilder<?> additionalDatabuilder = AdditionalDataBuilderFactory.builderFor(specType);
            config.execute((U) additionalDatabuilder);
            additionalData = additionalDatabuilder.build();
        } else {
            AdditionalDataBuilder<?> additionalDatabuilder = AdditionalDataBuilderFactory.builderFor(additionalData);
            config.execute((U) additionalDatabuilder);