AxiomPaperPlugin/src/main/java/com/moulberry/axiom/VersionHelper.java

package com.moulberry.axiom;

import io.netty.buffer.Unpooled;
import net.minecraft.network.FriendlyByteBuf;
import net.minecraft.network.protocol.game.ClientboundCustomPayloadPacket;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.level.ServerPlayer;

public class VersionHelper {

    public static void sendCustomPayload(ServerPlayer serverPlayer, ResourceLocation id, byte[] data) {
        serverPlayer.connection.send(new ClientboundCustomPayloadPacket(id, new FriendlyByteBuf(Unpooled.wrappedBuffer(data))));
    }

}