Optional dataData associated with the mdast code (flow).
Optional langLanguage of computer code being marked up.
Optional metaCustom information relating to the node.
If the lang field is present, a meta field can be present.
Optional positionPosition of a node in a source document.
Nodes that are generated (not in the original source document) must not have a position.
Node type of mdast code (flow).
Plain-text value.
Markdown code (flow) (block).