NBTSchematic.java

import net.menoni.rd.RuntimeDebugger;
import net.menoni.rd.model.Debugger;
import net.minecraft.server.v1_14_R1.*;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.command.CommandSender;
import org.bukkit.craftbukkit.v1_14_R1.CraftWorld;
import org.bukkit.entity.Player;

public class NBTSchematic implements Debugger {
	@Override
	public void debug(RuntimeDebugger plugin, CommandSender cs) {
		if (!(cs instanceof Player)) {
			cs.sendMessage("need a player");
			return;
		}

		Player p = (Player) cs;

		DefinedStructureManager definedStructureManager = ((CraftWorld) p.getWorld()).getHandle().getDataManager().f();
		p.sendMessage("Found defined structure manager: " + definedStructureManager.toString());
		DefinedStructure definedStructure = definedStructureManager.a(new MinecraftKey("colonywars", "cathedral"));
		p.sendMessage("Found defined structure: " + definedStructure.toString());
		p.sendMessage(ChatColor.YELLOW + definedStructure.b());
		DefinedStructureInfo structureInfo = (new DefinedStructureInfo()).a(EnumBlockMirror.NONE).a(EnumBlockRotation.NONE).a(false).a((ChunkCoordIntPair)null);
		p.sendMessage("Found defined structure info: " + structureInfo.toString());

		definedStructure.a(((CraftWorld)p.getWorld()).getHandle(), getBlockPos(p.getLocation().clone().add(0, -1, 0)), structureInfo);
		p.sendMessage("done");
	}

	public BlockPosition getBlockPos(Location location) {
		return new BlockPosition(
				location.getBlockX(),
				location.getBlockY(),
				location.getBlockZ()
		);
	}
}