*/
    public static <T1, T2> Pair<T1, T2> pair(final T1 first, final T2 second) {
        return new Pair<>(first, second);
    }

    /**
     * インスタンスを構築します。
     */
    public Pair() {
    }

    /**
     * インスタンスを構築します。
     *
     * @param first
     *            1番目の値
     * @param second
     *            2番目の値
     */
    public Pair(final T1 first, final T2 second) {

                .collect(Collectors.groupingBy(Pair::getFirst, Collectors.mapping(Pair::getSecond, Collectors.toList())));
        sourceMap.put("searchField", searchFieldMap);
        final Map<String, List<String>> headerMap = headerList.stream()
                .collect(Collectors.groupingBy(Pair::getFirst, Collectors.mapping(Pair::getSecond, Collectors.toList())));
        sourceMap.put("headers", headerMap);

                    }
                    configPasswordMap.put(value, list);
                }
                for (final Pair<Pattern, String> pair : list) {
                    if (pair.getFirst().matcher(url).matches()) {
                        return pair.getSecond();
                    }
                }
            }
        }

        return params != null ? params.get(ExtractData.PDF_PASSWORD) : null;
    }

pkg p4, func NewPair[$0 interface{ M }, $1 interface{ ~int }]($0, $1) Pair[$0, $1]
pkg p4, method (Pair[$0, $1]) Second() $1
pkg p4, method (Pair[$0, $1]) First() $0
pkg p4, type Pair[$0 interface{ M }, $1 interface{ ~int }] struct
pkg p4, func Clone[$0 interface{ ~[]$1 }, $1 interface{}]($0) $0

        final Map<String, List<String>> paramListMap = new HashMap<>();
        final String[] pairs = queryString.split("&");
        try {
            for (final String pair : pairs) {
                final int pos = pair.indexOf('=');
                if (pos >= 0) {
                    final String key = urlCodec.decode(pair.substring(0, pos), enc);
                    List<String> list = paramListMap.get(key);

            result.setAttributes(source.entrySet().stream().filter(e -> !"name".equals(e.getKey()))
                    .map(e -> new Pair<>(e.getKey(), (String) e.getValue())).collect(Collectors.toMap(Pair::getFirst, Pair::getSecond)));
            return result;
        } catch (InstantiationException | IllegalAccessException e) {

            result.setAttributes(source.entrySet().stream().filter(e -> !"name".equals(e.getKey()))
                    .map(e -> new Pair<>(e.getKey(), (String) e.getValue())).collect(Collectors.toMap(Pair::getFirst, Pair::getSecond)));
            return result;
        } catch (InstantiationException | IllegalAccessException e) {

        final Map<String, Pair<Map<String, String>, List<Pair<Pattern, String>>>> relatedContentMap = new HashMap<>();
        getAvailableRelatedContentList().stream().forEach(entity -> {
            final String key = getHostKey(entity);
            Pair<Map<String, String>, List<Pair<Pattern, String>>> pair = relatedContentMap.get(key);
            if (pair == null) {
                pair = new Pair<>(new HashMap<>(), new ArrayList<>());

            result.setRoles(toStringArray(source.get(ROLES)));
            result.setAttributes(source.entrySet().stream().filter(e -> isAttribute(e.getKey()))
                    .map(e -> new Pair<>(e.getKey(), (String) e.getValue())).collect(Collectors.toMap(Pair::getFirst, Pair::getSecond)));
            return result;
        } catch (InstantiationException | IllegalAccessException e) {

            final List<Tuple3<String, QueryBuilder, ScoreFunctionBuilder<?>>> boostList = getQueryMap(key).get(toLowerCase(keyword));
            if (boostList != null) {
                boostList.forEach(pair -> list.add(new FilterFunctionBuilder(pair.getValue2(), pair.getValue3())));
            }
        });
    }

    public List<Map<String, Object>> getBoostedDocumentList(final KeyMatch keyMatch) {