package net.minecraft.world.item; import net.minecraft.network.protocol.Packet; import net.minecraft.world.entity.player.Player; import net.minecraft.world.level.Level; import org.jetbrains.annotations.Nullable; public class ComplexItem extends Item { public ComplexItem(Item.Properties properties) { super(properties); } @Override public boolean isComplex() { return true; } @Nullable public Packet getUpdatePacket(ItemStack stack, Level level, Player player) { return null; } }