*
     * @param allDocIds all document IDs from search results
     * @return evaluation result with all documents marked as relevant
     */
    public static RelevanceEvaluationResult fallbackAllRelevant(final List<String> allDocIds) {
        return new RelevanceEvaluationResult(allDocIds, Collections.emptyList(), !allDocIds.isEmpty());
    }

    @Override
    public String toString() {

    }

    @Test
    public void test_fallbackAllRelevant() {
        List<String> docIds = Arrays.asList("doc1", "doc2", "doc3", "doc4", "doc5");
        RelevanceEvaluationResult result = RelevanceEvaluationResult.fallbackAllRelevant(docIds);

        assertTrue(result.isHasRelevantResults());
        assertEquals(docIds, result.getRelevantDocIds());
        assertNotNull(result.getRelevantIndexes());