Packet Class

package net.mcreator.modid;

import net.minecraftforge.fml.network.NetworkEvent;
import net.minecraftforge.common.MinecraftForge;

import net.minecraft.network.PacketBuffer;
import net.minecraft.entity.player.ServerPlayerEntity;

import net.mcreator.modid.ModIdMod;

import java.util.function.Supplier;
import java.util.function.BiConsumer;
import java.util.function.Function;


public class TextFieldPacketHandler {
    public TextFieldPacketHandler() {
        addNetworkMessage((int) 6554/*Random number :P*/, TextFieldDataSyncMessage.class, TextFieldDataSyncMessage::buffer, TextFieldDataSyncMessage::new, TextFieldDataSyncMessage::handler);
        MinecraftForge.EVENT_BUS.register(this);
    }

    public <T> void addNetworkMessage(int id, Class<T> messageType, BiConsumer<T, PacketBuffer> encoder, Function<PacketBuffer, T> decoder,
            BiConsumer<T, Supplier<NetworkEvent.Context>> messageConsumer) {
        ModIdMod.PACKET_HANDLER.registerMessage(id, messageType, encoder, decoder, messageConsumer);
    }


    public static class TextFieldDataSyncMessage {
        public String data;
        public TextFieldDataSyncMessage(PacketBuffer buffer) {
            this.data = "";
            this.data = (buffer.readString());
        }

        public TextFieldDataSyncMessage(String data) {
            this.data = data;
        }

        public static void buffer(TextFieldDataSyncMessage message, PacketBuffer buffer) {
            buffer.writeString(message.data);
        }

        public static void handler(TextFieldDataSyncMessage message, Supplier<NetworkEvent.Context> contextSupplier) {
            NetworkEvent.Context context = contextSupplier.get();
            context.enqueueWork(() -> {
                if (context.getDirection().getReceptionSide().isServer()) {
                    ServerPlayerEntity sender = context.getSender();
                    if (sender != null) {
                        sender.getCapability(ModIdModVariables.PLAYER_VARIABLES_CAPABILITY, null).ifPresent(capability -> {
                            capability.TmpTextFInput = message.data;
                            capability.syncPlayerVariables(sender);
                        });

                    }
                }
            });
            context.setPacketHandled(true);
        }
    }
}