final int startPosition = params.getStartPosition();
        if (startPosition * 2 >= windowSize) {
            int offset = params.getOffset();
            if (offset < 0) {
                offset = 0;
            } else if (offset > windowSize / 2) {
                offset = windowSize / 2;
            }
            int start = startPosition - offset;
            if (start < 0) {

labels.facet_filetype_pdf=filetype:pdf\t\
labels.facet_filetype_txt=filetype:txt\t\
labels.facet_filetype_others=filetype:others\n\

# ranking

# Window size for rank fusion.
rank.fusion.window_size=200
# Rank constant for rank fusion.
rank.fusion.rank_constant=20
# Number of threads for rank fusion.
rank.fusion.threads=-1
# Score field for rank fusion.
rank.fusion.score_field=rf_score

# acl

    /**
     * Get the value for the key 'rank.fusion.window_size'. <br>
     * The value is, e.g. 200 <br>
     * comment: Window size for rank fusion.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getRankFusionWindowSize();

    /**
     * Get the value for the key 'rank.fusion.window_size' as {@link Integer}. <br>
     * The value is, e.g. 200 <br>