// of default zeros grads is handled by the `DefaultGradientFunction` registered
// for each op.
// TODO(srbs): We need to define `ZerosLike` here to keep the compiler happy.
// Figure out a way to avoid this.
// TODO(srbs): Should ZerosLike check-fail instead of returning nullptr?
class TapeTensor {
 public:
  explicit TapeTensor(AbstractTensorHandle* handle);
  TapeTensor(const TapeTensor& other);

// When clients request content hosted on a particular source domain and that content make requests
// directed towards a domain other than its own, the remote domain needs to host a cross-domain
// policy file that grants access to the source domain, allowing the client to continue the transaction.
func setCrossDomainPolicyMiddleware(h http.Handler) http.Handler {

        synchronized ( PROTOCOL_HANDLERS ) {
            URLStreamHandler handler = PROTOCOL_HANDLERS.get(protocol);
            if ( handler != null )
                return handler;
            if ( factory != null ) {
                handler = factory.createURLStreamHandler(protocol);
            }
            if ( handler == null ) {
                String path = System.getProperty(HANDLER_PKGS_PROPERTY);

        synchronized (PROTOCOL_HANDLERS) {
            URLStreamHandler handler = (URLStreamHandler)
                    PROTOCOL_HANDLERS.get(protocol);
            if (handler != null) return handler;
            if (factory != null) {
                handler = factory.createURLStreamHandler(protocol);
            }
            if (handler == null) {
                String path = System.getProperty(HANDLER_PKGS_PROPERTY);

In this case, the `startup` event handler function will initialize the items "database" (just a `dict`) with some values.

You can add more than one event handler function.

And your application won't start receiving requests until all the `startup` event handlers have completed.

### `shutdown` event

To add a function that should be run when the application is shutting down, declare it with the event `"shutdown"`:

)

type promLogger struct{}

func (p promLogger) Println(v ...interface{}) {
	metricsLogIf(GlobalContext, fmt.Errorf("metrics handler error: %v", v))
}

type metricsV3Server struct {
	registry *prometheus.Registry
	opts     promhttp.HandlerOpts
	auth     func(http.Handler) http.Handler

	metricsData *metricsV3Collection
}

var (
	globalMetricsV3CollectorPaths []collectorPath

///

## Override the default exception handlers

**FastAPI** has some default exception handlers.

These handlers are in charge of returning the default JSON responses when you `raise` an `HTTPException` and when the request has invalid data.

You can override these exception handlers with your own.

### Override request validation exceptions

/**
 * URL handler for transparent smb:// URL handling
 * 
 */
public class Handler extends URLStreamHandler {

    private static final Logger log = LoggerFactory.getLogger(Handler.class);
    private CIFSContext transportContext;


    /**
     * 
     */
    public Handler () {}


    /**
     * @param tc
     */
    public Handler ( CIFSContext tc ) {

package jcifs.smb1.https;

/**
 * A <code>URLStreamHandler</code> used to provide NTLM authentication
 * capabilities to the default HTTPS handler.  This acts as a wrapper,
 * handling authentication and passing control to the underlying
 * stream handler.
 */
public class Handler extends jcifs.smb1.http.Handler {

    /**
     * The default HTTPS port (<code>443</code>).
     */
    public static final int DEFAULT_HTTPS_PORT = 443;

 * capabilities to the default HTTPS handler. This acts as a wrapper,
 * handling authentication and passing control to the underlying
 * stream handler.
 * 
 * @deprecated {@link NtlmHttpURLConnection} is broken by design.
 */
@Deprecated
public class Handler extends jcifs.http.Handler {

    /**
     * The default HTTPS port (<code>443</code>).
     */