* implementation could not be loaded.
*/
private void addInputHandler(Project project) throws BuildException {
InputHandler handler = null;
if (inputHandlerClassname == null) {
handler = new DefaultInputHandler();
} else {
handler = (InputHandler) ClasspathUtils.newInstance(
inputHandlerClassname, Main.class.getClassLoader(),
InputHandler.class);
project.setProjectReference(handler);