*/
public class ThemeException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new ThemeException with the specified message and cause.
     *
     * @param message the exception message
     * @param cause the underlying cause of this exception
     */
    public ThemeException(final String message, final Throwable cause) {

     * @return the theme name
     * @throws ThemeException if theme name cannot be determined
     */
    protected String getThemeName(final Artifact artifact) {
        final String themeName = artifact.getName().substring(ArtifactType.THEME.getId().length() + 1);
        if (StringUtil.isBlank(themeName)) {
            throw new ThemeException("Theme name is empty: " + artifact);
        }
        return themeName;