// GetNonBlocking will return the singleton value or nil if not set yet.
func (s *Singleton[T]) GetNonBlocking() *T {
	select {
	case <-s.set:
		return s.v
	default:
		return nil
	}
}

// IsSet will return whether the singleton has been set.
func (s *Singleton[T]) IsSet() bool {
	select {
	case <-s.set:
		return true
	default:
		return false
	}
}

// Set the value and unblock all Get requests.

			// unconsumedTimer fires.
			select {
			// Check after a second
			case <-time.After(time.Second):
				h.mutex.Unlock()
				continue

			case <-h.ctx.Done():
				h.mutex.Unlock()
				// discard result and return.
				return errHealStopSignalled

			// Timeout if no results consumed for too long.
			case <-unconsumedTimer.C:
				h.mutex.Unlock()
				return errHealIdleTimeout
			}
		}

   * analysis that that means "plain {@code T}" rather than the inferred type {@code @Nullable T}.
   * (Even if supported added {@code @NonNull}, that would not help, since the problem case
   * addressed by this method is the case in which {@code T} has parametric nullness -- and thus its
   * value may be legitimately {@code null}.)
   */
  @SuppressWarnings("nullness")
  @ParametricNullness

	// Not supported yet
	// switch v.MFADelete {
	// case Enabled, Disabled:
	// default:
	// 	return Errorf("unsupported MFADelete state %s", v.MFADelete)
	// }
	switch v.Status {
	case Enabled:
		const maxExcludedPrefixes = 10
		if len(v.ExcludedPrefixes) > maxExcludedPrefixes {
			return errTooManyExcludedPrefixes
		}

	case Suspended:
		if len(v.ExcludedPrefixes) > 0 {

		switch err {
		case openid.ErrTokenExpired:
			switch action {
			case clientGrants:
				writeSTSErrorResponse(ctx, w, ErrSTSClientGrantsExpiredToken, err)
			case webIdentity:
				writeSTSErrorResponse(ctx, w, ErrSTSWebIdentityExpiredToken, err)
			}
			return
		case auth.ErrInvalidDuration:
			writeSTSErrorResponse(ctx, w, ErrSTSInvalidParameterValue, err)

        List<KerberosAuthData> authorizations = new ArrayList<>();

        switch ( authType ) {
        case KerberosConstants.AUTH_DATA_RELEVANT:
            authorizations = new KerberosRelevantAuthData(token, keys).getAuthorizations();
            break;
        case KerberosConstants.AUTH_DATA_PAC:
            authorizations.add(new KerberosPacAuthData(token, keys));
            break;
        default:

Similar to the way you can [add `dependencies` to the *path operation decorators*](dependencies-in-path-operation-decorators.md){.internal-link target=_blank}, you can add them to the `FastAPI` application.

In that case, they will be applied to all the *path operations* in the application:

//// tab | Python 3.9+

```Python hl_lines="16"
{!> ../../docs_src/dependencies/tutorial012_an_py39.py!}
```

////

        switch( informationLevel ) {
            case SMB_INFO_ALLOCATION:
                return readSmbInfoAllocationWireFormat( buffer, bufferIndex );
            case SMB_QUERY_FS_SIZE_INFO:
                return readSmbQueryFSSizeInfoWireFormat( buffer, bufferIndex );
            case SMB_FS_FULL_SIZE_INFORMATION:
                return readFsFullSizeInformationWireFormat( buffer, bufferIndex );

	var buf []byte
	switch object {
	case systemXMLObject:
		si := systemInfo{
			ProtocolVersion: `"1.0"`,
			ModelName:       "\"MinIO " + ReleaseTag + "\"",
		}
		si.ProtocolCapabilities.CapacityInfo = true

		// Default recommended block size with MinIO
		si.SystemRecommendations.KBBlockSize = 4096

		buf = encodeResponse(&si)
	case capacityXMLObject:
		objAPI := newObjectLayerFn()

	// already present we can blindly use the
	// authToken as is instead of adding 'Bearer'
	tokens := strings.Fields(target.args.AuthToken)
	switch len(tokens) {
	case 2:
		req.Header.Set("Authorization", target.args.AuthToken)
	case 1:
		req.Header.Set("Authorization", "Bearer "+target.args.AuthToken)
	}

	req.Header.Set("Content-Type", "application/json")

	resp, err := target.httpClient.Do(req)