I would like to add  custom styles to the website editor

addons/web_editor/static/src/xml/editor.xml

                    <li id="paragraph-dropdown-item">

                        <a class="dropdown-item" href="#" id="paragraph" data-call="setTag" data-arg1="p">Normal</a>

                    </li>

                    <li id="pre-dropdown-item">

                        <a class="dropdown-item" href="#" id="pre" data-call="setTag" data-arg1="pre"><pre>Code</pre></a>

                    </li>

                    <li id="heading1-dropdown-item">

                        <a class="dropdown-item" href="#" id="heading1" data-call="setTag" data-arg1="h1"><h1>Header 1</h1></a>

                    </li>

I would like to add an option here and i know how to do that with xpath in a module

Something like

<p class="normal-serif">

But not sure what i should add to the data-arg1 in that case.

Anyone an idea ?