default String getVersion() {
    Package pluginPackage = this.getClass().getPackage();
    String implTitle =
        Optional.ofNullable(pluginPackage.getImplementationTitle())
            .filter(title -> !title.isBlank())
            .orElseGet(() -> this.getClass().getSimpleName());
    String implVersion =
        Optional.ofNullable(pluginPackage.getImplementationVersion())
            .filter(version -> !version.isBlank())
            .orElse("<Unknown Version>");
    return implTitle + "/" + implVersion;
  }
Retrieves the version information of the plugin. It constructs a version string using the
implementation title and version from the package information. If either the title or version
is not available, it defaults to the class's simple name and "Unknown Version", respectively.

@return A string representing the plugin's version information, formatted as "Title/vVersion".
plugin-api/src/main/java/org/hyperledger/besu/plugin/BesuPlugin.java