public boolean containsKey(@CheckForNull Object key) {
      updateBackingRowMapField();
      return (key != null && backingRowMap != null) && Maps.safeContainsKey(backingRowMap, key);
    }

    @Override
    @CheckForNull
    public V get(@CheckForNull Object key) {
      updateBackingRowMapField();
      return (key != null && backingRowMap != null) ? Maps.safeGet(backingRowMap, key) : null;
    }

    @Override

    return new CacheLoader<K, V>() {
      @Override
      public V load(K key) throws Exception {
        return loader.load(key);
      }

      @Override
      public Map<K, V> loadAll(Iterable<? extends K> keys) throws Exception {
        Map<K, V> result = Maps.newHashMap(); // allow nulls
        for (K key : keys) {
          result.put(key, load(key));
        }
        return result;
      }
    };
  }

    Key key = std::make_pair(filename, pos);
    // Look up the block, fetching and inserting it if necessary, and update the
    // LRU iterator for the key and block.
    std::shared_ptr<Block> block = Lookup(key);
    if (!block) {
      std::cerr << "No block for key " << key.first << "@" << key.second;
      abort();
    }
    MaybeFetch(key, block, status);

 */
public interface FessEnv {

    /** The key of the configuration. e.g. warm */
    String lasta_di_SMART_DEPLOY_MODE = "lasta_di.smart.deploy.mode";

    /** The key of the configuration. e.g. true */
    String DEVELOPMENT_HERE = "development.here";

    /** The key of the configuration. e.g. Local Development */
    String ENVIRONMENT_TITLE = "environment.title";

    /** The key of the configuration. e.g. false */

            List<RemoteRepository> repositories,
            RepositorySystemSession session);

    CacheRecord get(Key key);

    CacheRecord get(Key key, PluginRealmSupplier supplier) throws PluginResolutionException, PluginContainerException;

    CacheRecord put(Key key, ClassRealm pluginRealm, List<Artifact> pluginArtifacts);

    void flush();

    /**

		},
		config.HelpKV{
			Key:         KafkaClientTLSKey,
			Description: "path to client key for mTLS auth",
			Optional:    true,
			Type:        "path",
			Sensitive:   true,
		},
		config.HelpKV{
			Key:         KafkaVersion,
			Description: "specify the version of the Kafka cluster",
			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         QueueSize,

			"X-Amz-Server-Side-Encryption-Customer-Key":       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
			"X-Amz-Server-Side-Encryption-Customer-Key-Md5":   []string{"7PpPLAK26ONlVUGOWlusfg=="},
		},
		Bucket: "bucket",
		Object: "object",
		Metadata: map[string]string{

    for (Entry<K, V> entry : entries) {
      resetContainer();

      K key = entry.getKey();
      V value = entry.getValue();
      Collection<V> collection = multimap().get(key);
      assertNotNull(collection);
      Collection<V> expectedCollection = Helpers.copyToList(collection);

      multimap().remove(key, value);
      expectedCollection.remove(value);

        ImmutableSet.of(
            SIP_WITH_KEY.hashBytes(col1),
            SIP_WITH_KEY.hashBytes(col2),
            SIP_WITH_KEY.hashBytes(col3));
    assertEquals(3, hashCodes.size());
  }

  public void testToString() {
    assertEquals("Hashing.sipHash24(" + K0 + ", " + K1 + ")", SIP_WITH_KEY.toString());
    assertEquals("Hashing.sipHash24(" + K0 + ", " + K1 + ")", SIP_WITHOUT_KEY.toString());

     */

    public static Object setProperty( String key, String value ) {
        return prp.setProperty( key, value );
    }

    /**
     * Retrieve a property as an <code>Object</code>.
     */

    public static Object get( String key ) {
        return prp.get( key );
    }

    /**
     * Retrieve a <code>String</code>. If the key cannot be found,