if (oldLabels != null) {
                    for (String label : oldLabels) {
                        newLabelSet.add(label);
                    }
                }
                matchedLabelSet.stream().forEach(newLabelSet::add);
                dataMap.put(fessConfig.getIndexFieldLabel(), newLabelSet.toArray(new String[newLabelSet.size()]));

            }

            @Override
            public String getIndexFieldCache() {
                return "cache";
            }

            @Override
            public String getIndexFieldLabel() {
                return "label";
            }

            @Override
            public String getIndexFieldSegment() {
                return "segment";
            }

            @Override

            public String getIndexFieldCache() {
                return baseConfig.getIndexFieldCache();
            }

            @Override
            public String getIndexFieldLabel() {
                return baseConfig.getIndexFieldLabel();
            }

            @Override
            public String getIndexFieldSegment() {
                return baseConfig.getIndexFieldSegment();
            }

            }

            @Override
            public String getIndexFieldLang() {
                return "lang";
            }

            @Override
            public String getIndexFieldLabel() {
                return "label";
            }
        };
        ComponentUtil.setFessConfig(mockFessConfig);

        // Mock LabelTypeHelper

            }

            @Override
            public String getIndexFieldContent() {
                return "content";
            }

            @Override
            public String getIndexFieldLabel() {
                return "label";
            }

            @Override
            public String getIndexFieldSegment() {
                return "segment";
            }

            @Override

            }

            @Override
            public String getIndexFieldContent() {
                return "content";
            }

            @Override
            public String getIndexFieldLabel() {
                return "label";
            }

            @Override
            public String getIndexFieldSegment() {
                return "segment";
            }

            @Override

        //  boost
        putResultDataBody(dataMap, fessConfig.getIndexFieldBoost(), crawlingConfig.getDocumentBoost());
        // label: labelType
        putResultDataBody(dataMap, fessConfig.getIndexFieldLabel(), labelTypeHelper.getMatchedLabelValueSet(url));
        // role: roleType
        final List<String> roleTypeList = new ArrayList<>();

     * The value is, e.g. label <br>
     * comment: Field name for label in the index.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexFieldLabel();

    /**
     * Get the value for the key 'index.field.mimetype'. <br>
     * The value is, e.g. mimetype <br>
     * comment: Field name for MIME type in the index.