/**
     * @param WP_Filesystem_Base $wp_filesystem
     * @throws wfWAFAutoPrependHelperException
     */
    public function performAutoPrependFileRemoval($wp_filesystem)
    {
        $bootstrapPath = wordfence::getWAFBootstrapPath();
        if (!$wp_filesystem->delete($bootstrapPath)) {
            throw new wfWAFAutoPrependHelperException('We were unable to remove the <code>wordfence-waf.php</code> file
in the root of the WordPress installation. It\'s possible WordPress cannot remove the <code>wordfence-waf.php</code>
file because of file permissions. Please verify the permissions are correct and retry the removal.');
        }
    }