Access inline title element in plugin markdown post processor

I’m trying to hack a very simple plugin that will prepend an icon from the note front-matter to the inline title. This can be done by a very simple trick of adding the icon as an attribute of the inline title div and some custom CSS.
I use registerMarkdownPostProcessor but the element parameter is only the container of the note, not including the inline title above it.

Is there some way in the Obsidian API to obtain a reference to the inline title element?