public function termDocs(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
    {
        $subResults = array();
        $segmentStartDocId = 0;

        foreach ($this->_segmentInfos as $segmentInfo) {
            $subResults[] = $segmentInfo->termDocs($term, $segmentStartDocId, $docsFilter);

            $segmentStartDocId += $segmentInfo->count();
        }

        if (count($subResults) == 0) {
            return array();
        } else if (count($subResults) == 1) {
            // Index is optimized (only one segment)
            // Do not perform array reindexing
            return reset($subResults);
        } else {
            $result = call_user_func_array('array_merge', $subResults);
        }

        return $result;
    }