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

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

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

            }

            @Override
            public String getIndexFieldLastModified() {
                return "last_modified";
            }

            @Override
            public String getIndexFieldTimestamp() {
                return "timestamp";
            }

            @Override
            public String getIndexFieldMimetype() {
                return "mimetype";
            }

            // timestamp
            putResultDataBody(dataMap, fessConfig.getIndexFieldTimestamp(), lastModified);
        } else {
            // timestamp
            putResultDataBody(dataMap, fessConfig.getIndexFieldTimestamp(), now);
        }
        // indexingTarget
        putResultDataBody(dataMap, Constants.INDEXING_TARGET, indexingTarget);
        //  boost

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

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