private static final Random random = new Random();
    private static final Map<String, Structure> structures = Maps.newHashMap(); //put("test", new Structure(..., 3))
    private final JavaPlugin source;

    public void restructuring() { // /<command>
        for (Map.Entry<String, Structure> entry : structures.entrySet()) {
            final Location location = entry.getValue().pasteLocation;
            final String schematic = String.format("%s_%d.schematic", entry.getKey(), random.nextInt(entry.getValue().maxRandom));
            final File file = new File(source.getDataFolder(), schematic);
            Logging.info("file exists: " + file.exists()); //always true
            paste(file, location.getWorld(), new org.bukkit.util.Vector(location.getBlockX(), location.getBlockY(), location.getBlockX()));
        }
    }

    public static void paste(File file, org.bukkit.World bworld, org.bukkit.util.Vector vector) {
        try {
            Vector position = new Vector(vector.getX(), vector.getY(), vector.getZ());
            World world = FaweAPI.getWorld(bworld.getName());
            ClipboardFormat.SCHEMATIC.load(file).paste(world, position, true, false, (Transform) null);
        } catch (IOException e) {
            Logging.severe("Could not paste " + file.getName(), e);
        }
    }

    private static class Structure {
        private final Location pasteLocation;
        private final int maxRandom;

        Structure(Location pasteLocation, int maxRandom) {
            this.pasteLocation = pasteLocation;
            this.maxRandom = maxRandom;
        }
    }