// Then
        Map<String, Object> context = exception.getContext();
        assertEquals("server.example.com", context.get("host"));
        assertEquals(445, context.get("port"));
        assertEquals("/share/file.txt", context.get("path"));
        assertEquals("testuser", context.get("user"));
    }

    @Test
    @DisplayName("Should identify error categories correctly")

The handler function has this signature.

Sample handler:
```go
    handler :=  func(ctx context.Context, payload []byte, in <-chan []byte, out chan<- []byte) *RemoteErr {
        fmt.Println("Got request with initial payload", p, "from", GetCaller(ctx context.Context))
        fmt.Println("Subroute:", GetSubroute(ctx))
        for {
            select {
            case <-ctx.Done():

)

// Global service signal channel.
var globalServiceSignalCh = make(chan serviceSignal)

// GlobalContext context that is canceled when server is requested to shut down.
// cancelGlobalContext can be used to indicate server shutdown.
var GlobalContext, cancelGlobalContext = context.WithCancel(context.Background())

// restartProcess starts a new process passing it the active fd's. It

    /**
     * Create a new directory lease manager
     *
     * @param context CIFS context
     * @param leaseManager base lease manager
     */
    public DirectoryLeaseManager(CIFSContext context, LeaseManager leaseManager) {
        this.context = context;
        this.baseLeaseManager = leaseManager;
        this.directoryCache = new ConcurrentHashMap<>();

			key := msgPath(fmt.Sprintf("%s.%s", bucket, domainName), c.prefixPath)
			key = key + etcdPathSeparator + ip
			ctx, cancel := context.WithTimeout(context.Background(), defaultContextTimeout)
			_, err = c.etcdClient.Put(ctx, key, string(bucketMsg))
			cancel()
			if err != nil {
				ctx, cancel = context.WithTimeout(context.Background(), defaultContextTimeout)
				c.etcdClient.Delete(ctx, key)
				cancel()
				return err
			}
		}

		return store.ErrNotConnected
	}

	return nil
}

// NewWebhookTarget - creates new Webhook target.
func NewWebhookTarget(ctx context.Context, id string, args WebhookArgs, loggerOnce logger.LogOnce, transport *http.Transport) (*WebhookTarget, error) {
	ctx, cancel := context.WithCancel(ctx)

	var queueStore store.Store[event.Event]
	if args.QueueDir != "" {

should have a convention set, so (1) can be treated as a rare case where a value must be provided by a user.

Best practice is to set conventions in a plugin (2). This keeps the underlying object "dumb", so it can be reused in multiple contexts and doesn't contain any special information about how conventions are calculated or what they could be.  In the wild, we've seen some objects set conventions in the object's constructor (3), but this can lead to unexpected assumptions or coupling...

        return new TreeSet<E>(contents);
      }
    },
    UnmodifiableSetImpl {
      @Override
      public <E extends Comparable<E>> Set<E> create(Collection<E> contents) {
        return unmodifiableSet(new HashSet<E>(contents));
      }
    },
    SynchronizedSetImpl {
      @Override
      public <E extends Comparable<E>> Set<E> create(Collection<E> contents) {

     *
     * @param context
     *            The context in which to parse the spec. Must not be {@literal null}.
     * @param spec
     *            A string to be parsed as a <code>URL</code>. Must not be {@literal null} or empty.
     * @return A <code>URL</code>.
     */
    public static URL create(final URL context, final String spec) {

     *            context to use
     * @return whether this address is permanent
     *
     * @throws UnknownHostException
     *             if the host cannot be resolved to find out.
     */
    boolean isPermanent(CIFSContext tc) throws UnknownHostException;

    /**
     * Retrieves the MAC address of the remote network interface. Samba returns all zeros.
     *
     * @param tc
     *            context to use
     *