code: public final void write(Collection<? extends Client> clients) {
          if (clients.isEmpty()) {
              throw new IllegalArgumentException("You must send this packet to at least one client!");
          }
  
          clients.forEach(this::write);
      }
docs: Queues this {@link Packet} to one (or more) {@link Client}(s).
  <br><br>
  No {@link Client} will receive this {@link Packet} until {@link Client#flush()} is called for that respective
  {@link Client}.
  
  @param clients A {@link Collection} of {@link Client}s.