* Builds the projects for the specified POM files and optionally their children.
     *
     * @param pomFiles The POM files to build, must not be {@code null}.
     * @param recursive {@code true} to recursively build submodules referenced by the POM files, {@code false} to
     *            build only the specified POM files.
     * @param request The project builder configuration that provides further parameters, must not be {@code null}.