}

    /**
     * Clean up all pooled regions
     *
     * This method should be called when shutting down to
     * release all resources.
     */
    public void cleanup() {
        // Clean up all pooled regions
        RdmaMemoryRegion region;

        while ((region = availableSendRegions.poll()) != null) {
            region.close();
            totalReleased.incrementAndGet();
        }

   *
   * <p>It's acceptable for the underlying multimap to contain null keys, and even null values
   * provided that the function is capable of accepting null input. The transformed multimap might
   * contain null values, if the function sometimes gives a null result.
   *
   * <p>The returned multimap is not thread-safe or serializable, even if the underlying multimap

   *
   * <p>It's acceptable for the underlying multimap to contain null keys, and even null values
   * provided that the function is capable of accepting null input. The transformed multimap might
   * contain null values, if the function sometimes gives a null result.
   *
   * <p>The returned multimap is not thread-safe or serializable, even if the underlying multimap

        if (this == obj)
            return true;
        if (obj == null || getClass() != obj.getClass())
            return false;
        NetworkInterfaceInfo that = (NetworkInterfaceInfo) obj;
        return interfaceIndex == that.interfaceIndex && address != null ? address.equals(that.address) : that.address == null;
    }

    @Override
    public int hashCode() {
        int result = interfaceIndex;

        byte[] buffer = new byte[8];
        int encoded = spy.encode(buffer, 0);
        int decoded = spy.decode(buffer, 0, 8);
        String str = spy.toString();

        // Verify all methods were called except toString (Mockito limitation)
        verify(spy).getFileInformationLevel();
        verify(spy).size();
        verify(spy).encode(buffer, 0);
        verify(spy).decode(buffer, 0, 8);

[Download the latest release](https://prometheus.io/download) of Prometheus for your platform, then extract it

```sh
tar xvfz prometheus-*.tar.gz
cd prometheus-*
```

Prometheus server is a single binary called `prometheus` (or `prometheus.exe` on Microsoft Windows). Run the binary and pass `--help` flag to see available options

```sh
./prometheus --help
usage: prometheus [<flags>]

The Prometheus monitoring server

     */
    public String getAsString(final String key) {
        if (params.get(key) instanceof final String strValue) {
            return strValue;
        }
        final Object value = params.get(key);
        if (value != null) {
            return value.toString();
        }
        return null;
    }

    /**

    // If a clear() happens close to the end of computation, one of two things should happen:
    // - computation ends first: the removal listener is called, and the cache does not contain the
    //   key/value pair
    // - clear() happens first: the removal listener is not called, and the cache contains the pair
    AtomicBoolean computationShouldWait = new AtomicBoolean();
    CountDownLatch computationLatch = new CountDownLatch(1);

    // If a clear() happens close to the end of computation, one of two things should happen:
    // - computation ends first: the removal listener is called, and the cache does not contain the
    //   key/value pair
    // - clear() happens first: the removal listener is not called, and the cache contains the pair
    AtomicBoolean computationShouldWait = new AtomicBoolean();
    CountDownLatch computationLatch = new CountDownLatch(1);

    protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }