*
   * <p><b>Note:</b> if {@code first} is represented as an {@link Optional}, this can be
   * accomplished with {@link Optional#or(Object) first.or(second)}. That approach also allows for
   * lazy evaluation of the fallback instance, using {@link Optional#or(Supplier)
   * first.or(supplier)}.
   *
   * <p><b>Java 9 users:</b> use {@code java.util.Objects.requireNonNullElse(first, second)}
   * instead.
   *

/**
 * Base class for implementing services that can handle {@link #doStart} and {@link #doStop}
 * requests, responding to them with {@link #notifyStarted()} and {@link #notifyStopped()}
 * callbacks. Its subclasses must manage threads manually; consider {@link
 * AbstractExecutionThreadService} if you need only a single execution thread.
 *
 * @author Jesse Wilson
 * @author Luke Sandberg
 * @since 1.0
 */

    )

    taskFaker.assertNoMoreTasks()
  }

  /**
   * This test puts several connections in flight that all fail at approximately the same time. It
   * confirms the fast fallback implements these invariants:
   *
   *  * if there's no TCP connect in flight, start one.
   *  * don't start a new TCP connect within 250 ms of the previous TCP connect.
   */
  @Test

	} {
		_, err = os.Stat(envfile)
		if err == nil {
			return true
		}
	}
	if osIsNotExist(err) {
		// if none of the files are present we may be running inside
		// CRI-O, Containerd etc..
		// Fallback to our container specific ENVs if they are set.
		return env.IsSet("MINIO_ACCESS_KEY_FILE")
	}

	// Log error, as we will not propagate it to caller
	internalLogIf(GlobalContext, err)

	return err == nil

		gorootPath = runtime.GOROOT()
		if gorootPath != "" {
			return
		}

		// runtime.GOROOT is empty — perhaps go_android_exec was built with
		// -trimpath and GOROOT is unset. Try 'go env GOROOT' as a fallback,
		// assuming that the 'go' command in $PATH is the correct one.

		cmd := exec.Command("go", "env", "GOROOT")
		cmd.Stderr = os.Stderr
		out, err := cmd.Output()
		if err != nil {

	}

	meta, err := loadBucketMetadataParse(ctx, objAPI, bucket, parse)
	if err != nil {
		if !globalIsErasure && !globalIsDistErasure && errors.Is(err, errVolumeNotFound) {
			// Only single drive mode needs this fallback.
			meta = newBucketMetadata(bucket)
		} else {
			return updatedAt, err
		}
	}
	updatedAt = UTCNow()
	switch configFile {
	case bucketPolicyConfig:
		meta.PolicyConfigJSON = configData

/**
 * Base class for implementing services that can handle {@link #doStart} and {@link #doStop}
 * requests, responding to them with {@link #notifyStarted()} and {@link #notifyStopped()}
 * callbacks. Its subclasses must manage threads manually; consider {@link
 * AbstractExecutionThreadService} if you need only a single execution thread.
 *
 * @author Jesse Wilson
 * @author Luke Sandberg
 * @since 1.0
 */

    } catch (TimeoutException e) {
        // Force lease release if break handling times out
        releaseLease(key);
        log.warn("Lease break timeout for key: {}", key);
    }
}
```

### 10.2 Fallback to Oplocks
```java
if (!context.getConfig().isUseLeases() || !session.supports(SMB3_0)) {
    // Fall back to traditional oplock mechanism
    useOplockInstead();
}
```

## 11. Monitoring and Metrics

        if (startBracket != -1 && endBracket != -1 && endBracket > startBracket) {
            return transportStr.substring(startBracket + 1, endBracket);
        }
        // Fallback: just use address
        return transport.getRemoteAddress().getHostAddress();
    }

    /**
     * Get connection key from address and port
     */

        try (SmbSessionImpl treesess = t.getSession()) {
            if (treesess.getCredentials().isAnonymous() || treesess.getCredentials().isGuest()) {
                // refresh anonymous session or fallback to anonymous from guest login
                try (SmbSessionInternal s =
                        trans.getSmbSession(this.ctx.withAnonymousCredentials(), treesess.getTargetHost(), treesess.getTargetDomain())