Writers field: Is it possible to limit the Nodes to only H2, H3, H4

I’m working with the Writers field but I can’t find the option to limit headings.
I found this example below, is this already possible?

text:
  type: writer
  label: Text
  marks:
    - bold
    - italic
  nodes:
    heading:
      - h2
      - h3

Nope.

Ah that is unfortunate. Let’s hope it will be added one day. For now separate Heading Block it is.