if (StringUtil.isBlank(value)) {
            return StringUtil.EMPTY_STRINGS;
        }
        return split(value, ",").get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).toArray(n -> new String[n]));
    }

    /**
     * Gets the default roles as an array.
     *
     * @return the default roles
     */
    protected static String[] getDefaultRolesAsArray() {

        String line;
        final BufferedReader br = new BufferedReader(r);

        while ((line = br.readLine()) != null) {
            line = line.toUpperCase().trim();
            if (line.length() == 0) {
                continue;
            }
            if (line.charAt(0) == '#') {
                if (line.startsWith("#INCLUDE ")) {

                // Field separator
                fields.add(unquoteField(currentField.toString().trim()));
                currentField.setLength(0);
            } else {
                currentField.append(c);
            }
        }

        // Add last field
        fields.add(unquoteField(currentField.toString().trim()));

        return fields.toArray(new String[0]);
    }

    /**

                        .forEach(q -> queryBuf.append(" filetype:\"").append(q.trim()).append('"')));
        stream(conditions.get(SearchRequestParams.AS_SITESEARCH))
                .of(stream -> stream.filter(q -> StringUtil.isNotBlank(q) && q.length() <= maxQueryLength)
                        .forEach(q -> queryBuf.append(" site:").append(q.trim())));
        stream(conditions.get(SearchRequestParams.AS_TIMESTAMP))

                        paramMap.put("unknown." + (unknownKey + 1), line.substring(pos + 1).trim());
                        unknownKey++;
                    } else if (pos > 0) {
                        final String key = line.substring(0, pos).trim();
                        if (pos < line.length()) {
                            String data = line.substring(pos + 1).trim();

                        updater.write("# " + line);
                    }
                    continue;
                }

                inputs = m.group(1).trim().split(",");
                output = m.group(2).trim();

                if (inputs == null || output == null || inputs.length == 0) {
                    logger.warn("Failed to parse mapping: line={}, path={}", line, path);

            final DuplicateHostHelper duplicateHostHelper = ComponentUtil.getDuplicateHostHelper();

            // set urls
            split(urlsStr, "[\r\n]").of(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).distinct().forEach(urlValue -> {
                if (!urlValue.startsWith("#") && protocolHelper.isValidWebProtocol(urlValue)) {
                    final String u = duplicateHostHelper.convert(urlValue);

                buf.append("</item>");
            }
        }
        buf.append("</list>");
        // TODO support other type
        // TODO trim(default)
        return "<field name=\"" + XmlUtil.escapeXml(name) + "\">" + buf.toString().trim() + "</field>\n";
    }

    /**
     * Returns additional data for the result.
     * @param responseData The response data.

                            .collect(Collectors.joining("\n")));
                    form.virtualHosts = stream(entity.getVirtualHosts())
                            .get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).collect(Collectors.joining("\n")));
                    form.name = null;
                });
                form.crudMode = CrudMode.CREATE;
            });
        }).renderWith(data -> {

                        postcard.addReplyTo(fessConfig.getMailReturnPath());
                        if (toAddresses.length > 0) {
                            stream(toAddresses).of(stream -> stream.map(String::trim).forEach(address -> {
                                postcard.addTo(address);
                            }));
                        } else {
                            postcard.addTo(fessConfig.getMailFromAddress());