Versions:ISchemaVersionCollection
Supplies all versions of a schema.
Versions in onion.net consist of content that was created or changed by a user at some point.
A version for a schema is generated whenever the XSD is updated. Since the name of a schema is stored in the XSD, the XSD is updated at the time of this procedure. No version is generated however.
If a version of a schema is restored, the current version is not simply the version number of the restored version, but the next version is created from it.
Access: Read
Return type: Onion.Client.ISchemaVersionCollection