/** Test get concept related concepts. */
 @Test
 public void testGetConceptRelatedConcepts() {
   Map<String, Object> params = new HashMap<String, Object>();
   params.put(ConceptInsights.LIMIT, 10);
   params.put(ConceptInsights.LEVEL, 1);
   RequestedFields fs = new RequestedFields();
   fs.include("abstract");
   params.put("concept_fields", fs);
   Concepts concepts = service.getConceptRelatedConcepts(EXAMPLE_CONCEPT, params);
   Assert.assertNotNull(concepts);
 }
 /** Test get graph related concepts. */
 @Test
 public void testGetGraphRelatedConcepts() {
   Map<String, Object> params = new HashMap<String, Object>();
   List<Concept> concepts = new ArrayList<Concept>();
   concepts.add(EXAMPLE_CONCEPT);
   params.put(ConceptInsights.LIMIT, 10);
   params.put(ConceptInsights.LEVEL, 1);
   RequestedFields fs = new RequestedFields();
   fs.include("abstract");
   params.put("concept_fields", fs);
   Concepts conceptResults = service.getGraphRelatedConcepts(Graph.WIKIPEDIA, concepts, params);
   Assert.assertNotNull(conceptResults);
 }
  /** Test get graphs label search. */
  @Test
  public void testGetGraphsLabelSearch() {
    Map<String, Object> params = new HashMap<String, Object>();
    params.put(ConceptInsights.QUERY, "cognitv");
    params.put(ConceptInsights.LIMIT, 10);
    params.put(ConceptInsights.PREFIX, false);

    RequestedFields fs = new RequestedFields();
    fs.include("abstract");
    params.put("concept_fields", fs);

    Matches matches = service.searchGraphsConceptByLabel(Graph.WIKIPEDIA, params);
    Assert.assertNotNull(matches);
    Assert.assertFalse(matches.getMatches().isEmpty());
  }