Obtains a count of external users.
public long license_getExternalUsers( String accessToken );
The license_getExternalUsers operation obtains a count of legal external users for the current license.
Either the security token passed to your application by Vibe as part of implementing a remote application, or the null value.
An integer indicating the number of allowed external users.
Java objects in the Vibe sources (see Section 1.7.1, Working with Java Objects)