Define blocksToHTMLLossy output for custom blocks and inlinecontent.

[Hammond2789]

I am currently using blocknotes with react and I create react components for my custom content, either a block or inlinecontent.
I am required to also store a HTML version of the content as well as the JSON object but these custom pieces do not seem to be added to blocksToHTMLLossy.

I believe I saw (a few weeks ago) that you were planning on including the ability to define the HTML output for the custom items in their spec (if not, then I would very much suggest it).

I cannot seem to find anything about it now and am questioning if I imagined it. If I am correct and you are planning on this, when could I expect it to be available?