assertEquals(0, stats.hitCount());

    Object key = new Object();
    assertSame(key, cache.get(key));
    stats = cache.stats();
    assertEquals(1, stats.missCount());
    assertEquals(1, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());

    key = new Object();
    assertSame(key, cache.getUnchecked(key));
    stats = cache.stats();

    @SuppressWarnings("unchecked")
    @Override
    public @Nullable Collection<V> get(@Nullable Object key) {
      return containsKey(key) ? multimap.get((K) key) : null;
    }

    @Override
    public @Nullable Collection<V> remove(@Nullable Object key) {
      return containsKey(key) ? multimap.removeAll(key) : null;
    }

    @Override
    public Set<K> keySet() {
      return multimap.keySet();

    @SuppressWarnings("unchecked")
    @Override
    public @Nullable Collection<V> get(@Nullable Object key) {
      return containsKey(key) ? multimap.get((K) key) : null;
    }

    @Override
    public @Nullable Collection<V> remove(@Nullable Object key) {
      return containsKey(key) ? multimap.removeAll(key) : null;
    }

    @Override
    public Set<K> keySet() {
      return multimap.keySet();

    if (key == null) {
      return null;
    }
    int hash = hash(key);
    return segmentFor(hash).getEntry(key, hash);
  }

  @Override
  public boolean containsKey(@Nullable Object key) {
    if (key == null) {
      return false;
    }
    int hash = hash(key);
    return segmentFor(hash).containsKey(key, hash);
  }

  @Override

    default String getSystemProperty(final String key) {
        return ComponentUtil.getSystemProperties().getProperty(key, System.getProperty(Constants.SYSTEM_PROP_PREFIX + key));
    }

    default String getSystemProperty(final String key, final String defaultValue) {
        return ComponentUtil.getSystemProperties().getProperty(key, System.getProperty(Constants.SYSTEM_PROP_PREFIX + key, defaultValue));
    }

     * </p>
     *
     * @param <K> the key type of {@link HashMap}
     * @param <V> the value type of {@link HashMap}
     * @param map the map
     * @param key the key with which the specified value is to be associated
     * @param value the value to be associated with the specified key
     * @return the previous value associated with the specified key, or the specified value if the key was not present

```
KEY:
notify_redis[:name]  publish bucket notifications to Redis datastores

ARGS:

        }
    }

    /**
     * Escapes a JSON key-value pair.
     * @param key The key.
     * @param value The value.
     * @return The escaped key-value pair.
     */
    protected String escapeJsonKeyValue(final String key, final String value) {
        return "\"" + key + "\":" + escapeJson(value);
    }

    /**
     * Writes a JSON response.

 *
 * {@snippet :
 * LoadingCache<Key, Graph> graphs = CacheBuilder.newBuilder()
 *     .maximumSize(10000)
 *     .expireAfterWrite(Duration.ofMinutes(10))
 *     .removalListener(MY_LISTENER)
 *     .build(
 *         new CacheLoader<Key, Graph>() {
 *           public Graph load(Key key) throws AnyException {
 *             return createExpensiveGraph(key);
 *           }
 *         });
 * }
 *

    setUp(parameters.first, parameters.second)
    var key = ""
    assertFailsWith<IllegalArgumentException> {
      key = "has_space "
      cache.edit(key)
    }.also { expected ->
      assertThat(expected.message).isEqualTo("keys must match regex [a-z0-9_-]{1,120}: \"$key\"")
    }
    assertFailsWith<IllegalArgumentException> {
      key = "has_CR\r"
      cache.edit(key)
    }.also { expected ->