Gets a list of Staff Types assigned to the given Client 

Possible staff types can be obtained by calling the GetStaffTypes function. 

A token is passed for authentication. If the authentication fails, or other errors occur, no staff members are returned. The result of the authentication is represented by a TAuthenticate object. 

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 staff types of a particular client")]
public TAuthStaffTypeList GetClientStaffTypes(string token, string clientCode);