Add parent tag with PHP HTML purifier

Problem

I have .html file without <ul>:

<div>
<li> <a href="#">1</a> </li>
<li> <a href="#">2</a> </li>
<li> <a href="#">3</a> </li>
</div>

After purifying it looks like this:

<div>
<a href="#">1</a>
<a href="#">2</a>
<a href="#">3</a>
</div>

Question

Is it possible to add parent <ul> tag around <li> with HTML purifier?

<div>
<ul>
    <li> <a href="#">1</a> </li>
    <li> <a href="#">2</a> </li>
    <li> <a href="#">2</a> </li>
</ul>
</div>

Or is it possible to keep it like it is without <ul>?

Side note

I'm using mewebstudio/Purifier package on the Laravel 8 project.

The package is based on htmlpurifier.org.

I didn't find anything useful in the docs for my problem.