schemaVersion property
Indicates (by URL or string) a particular version of a schema used in
some CreativeWork. This property was created primarily to indicate the
use of a specific schema.org release, e.g. 10.0 as a simple string,
or more explicitly via URL,
https://schema.org/docs/releases.html#v10.0. There may be
situations in which other schemas might usefully be referenced this way,
e.g.
http://dublincore.org/specifications/dublin-core/dces/1999-07-02/
but this has not been carefully explored in the community.
Implementation
String? schemaVersion;