/// <summary>
 /// finds the code set service context among the collection of received service contexts.
 /// </summary>
 internal static CodeSetServiceContext FindCodeSetServiceContext(omg.org.IOP.ServiceContextList contexts) {                        
     if (contexts.ContainsServiceContext(SERVICE_ID)) {
         omg.org.IOP.ServiceContext context = contexts.GetServiceContext(SERVICE_ID);
         return new CodeSetServiceContext(context);
     } else {
         return null;
     }
 }