*/
    public void addLanguage(final String lang) {
        languages.add(lang);
    }

    /**
     * Sets the detail flag.
     * @param detail The detail flag.
     */
    public void setDetail(final boolean detail) {
        this.detail = detail;
    }

    /**
     * Adds an exclude word.
     * @param excludeWord The word to exclude.
     */

     * Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.
     * @param details The parameter value of details. (NotNull)
     */
    public void setDetails(String details) {
        registerVariable("details", details);
    }

                    postcard.setCount(String.valueOf(levelEvents.size()));
                    postcard.setInterval(String.valueOf(fessConfig.getLogNotificationIntervalAsInteger()));
                    postcard.setDetails(details);
                });
            } catch (final Exception e) {
                logger.warn("Failed to send log notification.", e);
            } finally {

                }
                // Email
                org = contributor.getEmail();
                val = interpolate(org);
                if (org != val) {
                    contributor.setEmail(val);
                }
                // Url
                org = contributor.getUrl();
                val = interpolate(org);
                if (org != val) {
                    contributor.setUrl(val);

        String src = source.getEmail();
        if (src != null) {
            if (sourceDominant || target.getEmail() == null) {
                target.setEmail(src);
                target.setLocation("email", source.getLocation("email"));
            }
        }
    }

    protected void mergeContributor_Url(