@Override
 public void onLoad(PluginProperties properties) {
   destructibleMaterials =
       properties.getMaterials("spells-stairs-destructible", DEFAULT_DESTRUCTIBLES);
   defaultDepth = properties.getInteger("spells-stairs-depth", defaultDepth);
   defaultWidth = properties.getInteger("spells-stairs-width", defaultWidth);
   defaultHeight = properties.getInteger("spells-stairs-height", defaultHeight);
   torchFrequency = properties.getInteger("spells-stairs-torch-frequency", torchFrequency);
 }