*
     * @param modelBuildingListener The model building listener to notify, may be {@code null}.
     * @return This request, never {@code null}.
     */
    ModelBuildingRequest setModelBuildingListener(ModelBuildingListener modelBuildingListener);

    /**
     * Gets the model cache to use for reuse of previously built models.
     *
     * @return The model cache or {@code null} if not set.
     */