copy region example

Region region = new CuboidRegion(pos1, pos2);
Vector to /* = where you want to paste */;
String worldName;
boolean pasteAir = true;
boolean skipEntities = false;
boolean copyBiomes = false;

EditSession editSession = new EditSessionBuilder(worldName).fastmode(true).build();
WorldData worldData = editSession.getWorldData();

ReadOnlyClipboard lazyClipboard = ReadOnlyClipboard.of(editSession, region, !skipEntities, copyBiomes);
BlockArrayClipboard clipboard = new BlockArrayClipboard(region, lazyClipboard);
ClipboardHolder holder = new ClipboardHolder(clipboard, worldData);
new Schematic(clipboard).paste(editSession, worldData, to, pasteAir, null);
editSession.flushQueue();