public int getFid() throws SmbException {
        if (!isValid()) {
            throw new SmbException("Descriptor is no longer valid");
        }
        return this.fid;
    }

    public byte[] getFileId() throws SmbException {
        if (!isValid()) {
            throw new SmbException("Descriptor is no longer valid");
        }
        return this.fileId;
    }

    /**
     * @return the initialSize

    int NT_STATUS_FILE_IS_A_DIRECTORY = 0xC00000ba;
    /** A duplicate name exists on the network */
    int NT_STATUS_DUPLICATE_NAME = 0xC00000bd;
    /** The specified network name is no longer available */
    int NT_STATUS_NETWORK_NAME_DELETED = 0xC00000c9;
    /** Network access is denied */
    int NT_STATUS_NETWORK_ACCESS_DENIED = 0xC00000ca;
    /** The network resource type is not correct */

    int NT_STATUS_FILE_IS_A_DIRECTORY = 0xC00000ba;
    /** A duplicate name exists on the network */
    int NT_STATUS_DUPLICATE_NAME = 0xC00000bd;
    /** The specified network name is no longer available */
    int NT_STATUS_NETWORK_NAME_DELETED = 0xC00000c9;
    /** Network access is denied */
    int NT_STATUS_NETWORK_ACCESS_DENIED = 0xC00000ca;
    /** The network name cannot be found */

import java.util.concurrent.locks.ReentrantReadWriteLock;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.CIFSContext;
import jcifs.smb.SmbFile;

/**
 * SMB2/SMB3 Lease Manager
 *
 * Manages lease state for SMB2/SMB3 connections
 */
public class LeaseManager {

    private static final Logger log = LoggerFactory.getLogger(LeaseManager.class);

The `TestClient` is based on <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>, and luckily, we can use it directly to test the API.

     * @see jcifs.util.transport.Response#getExpiration()
     */
    @Override
    public Long getExpiration() {
        return this.expiration;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.util.transport.Response#setExpiration(java.lang.Long)
     */
    @Override
    public void setExpiration(final Long exp) {
        this.expiration = exp;
    }

    /**

#### The time to answer helps the attackers { #the-time-to-answer-helps-the-attackers }

At that point, by noticing that the server took some microseconds longer to send the "Incorrect username or password" response, the attackers will know that they got _something_ right, some of the initial letters were right.

/// warning

The recommended way to handle the *startup* and *shutdown* is using the `lifespan` parameter of the `FastAPI` app as described above. If you provide a `lifespan` parameter, `startup` and `shutdown` event handlers will no longer be called. It's all `lifespan` or all events, not both.

You can probably skip this part.

///

There's an alternative way to define this logic to be executed during *startup* and during *shutdown*.

```console
// Create an env var MY_NAME in line for this program call
$ MY_NAME="Wade Wilson" python main.py

// Now it can read the environment variable

Hello Wade Wilson from Python

// The env var no longer exists afterwards
$ python main.py

Hello World from Python
```

</div>

/// tip

        @SuppressWarnings("nullness") // safe because we pass sort() a range that contains real Ts
        T[] castBuffer = (T[]) buffer;
        // We've already taken O(k log k), let's make sure we don't take longer than O(k log k).
        sort(castBuffer, left, right + 1, comparator);
        break;
      }
    }
    bufferSize = k;

    threshold = uncheckedCastNullableTToT(buffer[minThresholdPosition]);