Optional
commit: stringThe commit string from https://github.com/schemaorg/schemaorg which is taken as source (if not given, the latest commit of our fork at https://github.com/semantifyit/schemaorg is taken). Use this parameter only if you want to change the schema.org repository used as source for the schema versions file. By standard, SDO Adapter uses a fork of the schema.org repository, which is updated only when schema.org releases a new vocabulary version, and that version passes all tests of SDO Adapter.
The latest version of the schema.org vocabulary
Returns the latest version identifier for the schema.org vocabulary. The internal cache is used for this function. If you want to reset the cache, use the function .fetchSchemaVersions().