@Override
  public void init(
      final CommandLine helpCommandLine,
      final CommandLine.Help.Ansi ansi,
      final PrintStream out,
      final PrintStream err) {
    this.ansi = ansi;
    this.out = out;
  }
This class provides a CLI command to enumerate the unstable options available in Besu.

<p>Unstable options are distinguished by

<ul>
  <li>Not being configured in the main BesuCommand
  <li>Being marked as 'hidden'
  <li>Having their first option name start with <code>--X</code>
</ul>

There is no stability or compatibility guarantee for options marked as unstable between releases.
They can be added and removed without announcement and their meaning and values can similarly
change without announcement or warning.
app/src/main/java/org/hyperledger/besu/cli/UnstableOptionsSubCommand.java