* After the buildplan is ready, the build()-method returns the immutable context useful during distribution.
 * This is an inner class, as it must be able to call readRawModel()
 *
 * @since 4.0.0
 */
class DefaultModelTransformerContextBuilder implements ModelTransformerContextBuilder {
    private final Graph dag = new Graph();
    private final DefaultModelBuilder defaultModelBuilder;
    private final DefaultModelTransformerContext context;

        this.transformer = transformer;
        this.versionParser = versionParser;
    }

    @Override
    public ModelTransformerContextBuilder newTransformerContextBuilder() {
        return new DefaultModelTransformerContextBuilder(this);
    }

    @Override
    public ModelBuilderResult build(ModelBuilderRequest request) throws ModelBuilderException {
        request = fillRequestDefaults(request);