Get the Web Clients for an Occurrence. 

This is a listing of all Web Clients who have made a Client Web Enrolment in a particular Occurrence. 

Each Web Client is represented by a TWecl. The collection of Web Clients is represented by a List of TWecl. 

An Occurrence ID (iOccu_ID) is passed as a parameter. iOccu_ID must specify a web occurrence (a published Occurrence). 

A token is passed for authentication. If the authentication fails, or other errors occur, Web Clients are returned. The result of the authentication is represented by a TAuthenticate object. 

Requires a valid registration key entry for the Short Courses feature. 

This function has security level "Protected", and can only be accessed by users that have explicitly been granted permission to the API.

[WebMethod(Description = "Gets a list of web clients enrolled in all web enrolments against the specified occurrence ID")]
public TAuthWeclList GetWebClientsForOccurrence(string sToken, int iOccu_ID);