* they were registered.
   *
   * <p>RuntimeExceptions thrown by a listener will be caught and logged. Any exception thrown
   * during {@code Executor.execute} (e.g., a {@code RejectedExecutionException}) will be caught and
   * logged.
   *
   * @param listener the listener to run when the service changes state is complete

        // This should throw an exception during decode
        assertThrows(Exception.class, () -> {
            response.readDataWireFormat(buffer, 0, 10);
        });
    }

    @Test
    void testToString() {
        // Test toString method
        response = new Trans2QueryFSInformationResponse(config, FileSystemInformation.SMB_INFO_ALLOCATION);

        String result = response.toString();

# Classes as Dependencies { #classes-as-dependencies }

Before diving deeper into the **Dependency Injection** system, let's upgrade the previous example.

## A `dict` from the previous example { #a-dict-from-the-previous-example }

In the previous example, we were returning a `dict` from our dependency ("dependable"):

{* ../../docs_src/dependencies/tutorial001_an_py310.py hl[9] *}

   * fallback}. {@link Function#apply} is not invoked until the primary input has failed, so if the
   * primary input succeeds, it is never invoked. If, during the invocation of {@code fallback}, an
   * exception is thrown, this exception is used as the result of the output {@code Future}.
   *
   * <p>Usage example:
   *
   * {@snippet :

MINIO_IDENTITY_LDAP_SRV_RECORD_NAME         (string)    DNS SRV record name for LDAP service, if given, must be one of "ldap", "ldaps" or "on"
MINIO_IDENTITY_LDAP_LOOKUP_BIND_DN          (string)    DN for LDAP read-only service account used to perform DN and group lookups
MINIO_IDENTITY_LDAP_LOOKUP_BIND_PASSWORD    (string)    Password for LDAP read-only service account used to perform DN and group lookups

**Affected Versions**:

    )
  }

  @ParameterizedTest
  @ValueSource(booleans = [false, true])
  fun proxyMoveTest(cleanClose: Boolean) {
    // Define a single Proxy at myproxy:8008 that will artificially move during the test
    val proxySelector = RecordingProxySelector()
    val socketAddress = InetSocketAddress.createUnresolved("myproxy", 8008)
    proxySelector.proxies.add(Proxy(Proxy.Type.HTTP, socketAddress))

     */
    public static class FailoverState {

        private final String channelId;
        private final long failureTime;
        private int retryCount;
        private long nextRetryTime;

        /**
         * Create failover state
         *
         * @param channelId channel identifier
         */
        public FailoverState(String channelId) {
            this.channelId = channelId;

     */
    protected DictionaryFile(final String id, final String path, final Date timestamp) {
        this.id = id;
        this.path = path;
        this.timestamp = timestamp;
    }

    /**
     * Returns the unique identifier of this dictionary file.
     *
     * @return the dictionary file ID
     */
    public String getId() {
        return id;
    }

    /**

     * @param timestamp The last modified timestamp of the file.
     */
    public StopwordsFile(final String id, final String path, final Date timestamp) {
        super(id, path, timestamp);
    }

    @Override
    public String getType() {
        return STOPWORDS;
    }

    @Override
    public String getPath() {
        return path;
    }

    @Override