DocMap docMap = new DocMap(parentMap);

        docMap.put("key1", "value1");
        docMap.put("key2", null);

        assertTrue(docMap.containsKey("key1"));
        assertTrue(docMap.containsKey("key2"));
        assertFalse(docMap.containsKey("key3"));

        assertTrue(docMap.containsValue("value1"));
        assertTrue(docMap.containsValue(null));
        assertFalse(docMap.containsValue("nonexistent"));

            ThreadUtil.sleep(500);
            count++;
            final Map<String, Object> scheduler = getSchedulerItem(namePrefix);
            assertTrue(scheduler.containsKey("running"));
            isRunning = (Boolean) scheduler.get("running");
        }
        if (300 <= count) {
            logger.info("Time out: Failed to start crawler)");
            fail(); // Time Out
        }

        final List<Map<String, String>> dicts = JsonPath.from(response).getList("response.settings");

        for (Map<String, String> item : dicts) {
            assertTrue(item.containsKey("id"));
            assertTrue(item.containsKey("type"));
            if (getDictType().equals(item.get("type"))) {
                dictId = item.get("id");
                return;
            }
        }

        fail();
    }

        assertTrue(queryMap.containsKey("labels.facet_filetype_pdf") || queryMap.containsKey("PDF"));
        assertTrue(queryMap.containsKey("DOC") || queryMap.containsKey("labels.facet_filetype_doc"));
        assertTrue(queryMap.containsKey("labels.facet_filetype_txt") || queryMap.containsKey("TXT"));

        // Check values
        if (queryMap.containsKey("labels.facet_filetype_pdf")) {

    initMapWithNullValue();

    getMap().forcePut(k1(), null);

    expectContents(mapEntry(k1(), (V) null));

    assertFalse(getMap().containsKey(k0()));

    assertTrue(getMap().containsKey(k1()));
    assertTrue(getMap().inverse().containsKey(null));
    assertNull(getMap().get(k1()));
    assertEquals(k1(), getMap().inverse().get(null));
    assertEquals(1, getMap().size());
  }

    cache.invalidateAll();
    assertFalse(cache.asMap().containsKey(654));
    assertFalse(cache.asMap().containsKey(2456));
    assertFalse(cache.asMap().containsKey(2));

    cache.put(654, 2675);
    cache.put(2456, 56);
    cache.put(2, 15);
    cache.put(1, 3);

    cache.invalidateAll(ImmutableSet.of(1, 2));

    assertFalse(cache.asMap().containsKey(1));
    assertFalse(cache.asMap().containsKey(2));

      assertEquals(!multimap().get(k).isEmpty(), multimap().containsKey(k));
    }
  }

  public void testContainsKeyAgreesWithAsMap() {
    for (K k : sampleKeys()) {
      assertEquals(multimap().containsKey(k), multimap().asMap().containsKey(k));
    }
  }

  public void testContainsKeyAgreesWithKeySet() {
    for (K k : sampleKeys()) {
      assertEquals(multimap().containsKey(k), multimap().keySet().contains(k));
    }
  }

        final Map<String, Object> res = JsonPath.from(response).getMap("response");
        assertTrue(res.containsKey("env_props"));
        assertTrue(res.containsKey("system_props"));
        assertTrue(res.containsKey("fess_props"));
        assertTrue(res.containsKey("bug_report_props"));
        assertEquals(Integer.valueOf(0), JsonPath.from(response).get("response.status"));
    }

    @Override

    }

    // Test containsKey
    public void test_containsKey() {
        assertFalse(dataStoreParams.containsKey("key1"));

        dataStoreParams.put("key1", "value1");
        assertTrue(dataStoreParams.containsKey("key1"));

        dataStoreParams.put("key2", null);
        assertTrue(dataStoreParams.containsKey("key2"));
    }

    // Test putAll

        assertFalse(paramMap.containsKey("xxx"));
        assertTrue(paramMap.containsKey("aaa"));
        assertTrue(paramMap.containsKey("aaa_bbb"));
        assertTrue(paramMap.containsKey("aaaBbb"));
        assertTrue(paramMap.containsKey("AaaBbb"));
        assertFalse(paramMap.containsKey("aaabbb"));
        assertTrue(paramMap.containsKey("aaa_bbb_ccc"));
        assertTrue(paramMap.containsKey("aaaBbbCcc"));