code: private void loadTileCollisions(MapTileCollision mapCollision, Tile tile)
      {
          final TileCollision tileCollision;
          if (!tile.hasFeature(TileCollision.class))
          {
              tileCollision = new TileCollisionModel(tile);
              tile.addFeature(tileCollision);
          }
          else
          {
              tileCollision = tile.getFeature(TileCollision.class);
          }
          tileCollision.removeCollisionFormulas();
          addTileCollisions(mapCollision, tileCollision, tile);
      }
docs: Load the tile collisions.
  
  @param mapCollision The map tile collision owner.
  @param tile The tile reference.