code: public static ServerSentEvent withEventIdAndType(ByteBuf eventId, ByteBuf eventType, ByteBuf data) {
          return new ServerSentEvent(eventId, eventType, data);
      }
docs: Creates a {@link ServerSentEvent} instance with an event id and type.
  
  @param eventType Type for the event.
  @param eventId Id for the event.
  @param data Data for the event.
  
  @return The {@link ServerSentEvent} instance.