public Dictionary<string, ContactRegistration> syncContacts(int reqSeq, List<ContactModification> localContacts)
{
#if !SILVERLIGHT
send_syncContacts(reqSeq, localContacts);
return recv_syncContacts();
#else
var asyncResult = Begin_syncContacts(null, null, reqSeq, localContacts);
return End_syncContacts(asyncResult);
#endif
}
#if SILVERLIGHT