title: Copy large regions with Spigot
body: <p>I'm currently working on a training plugin, where every player would get his own region, to learn bridge for example. So when a player joins, the plugin should automatically generate a new area for this player and delete it when he leaves.</p>
  <p>I've created a SetupCommand where you have to set the start and end of the region that should be copied.</p>
  <p>Now the only thing to do is copy the region and teleport the player to it, however, I couldn't find any good ways to do that. The only solution I found so far is to loop through all blocks and copy them one by one. But I can imagine that this is not the best solution and would cause lag, not only server-side but also client-side.</p>
  <p>Are there better ways to clone a region than that?
  I've read you should use Schematics but they weren't going into detail.</p>