@Before
  public void setUp() throws Exception {
    region = server.getCache().getRegion(REGION_NAME);
    queryEngine = new DataQueryEngine((SystemManagementService) server.getManagementService(),
        server.getCache());
  }
Number of elements to be shown in queryData operation if query results contain collections like
Map, List etc.
geode-core/src/integrationTest/java/org/apache/geode/management/DataQueryEngineIntegrationTest.java