@SafeVarargs
    public final <T extends Client> void flushToAllExcept(T... clients) {
        writeHelper(Client::flush, clients);
    }
@ SafeVarargs public final < T extends Client > void flushToAllExcept ( T ... clients ) { writeHelper ( Client :: flush , clients ) ; }
Flushes all queued {@link Packet}s for all {@link Client}s except the one(s) specified.

@param <T> A {@link Client} or any of its children.
@param clients A variable amount of {@link Client}s to exclude from receiving the {@link Packet}.