config.addChild(createConfig(ELEMENT_BREADCRUMB_PREFIX, getBreadcrumbPrefix()));
DefaultConfigurationSerializer serializer = new DefaultConfigurationSerializer();
serializer.setIndent(true);
serializer.serializeToFile(getConfigurationFile(), config);
} catch (final Exception e) {
throw new RuntimeException("Problem with config file: " + configFile.getAbsolutePath(),
e);
}