Prevent Pump IC loading legacy data subsystem

Author: me4502

src/main/java/com/sk89q/craftbook/mechanics/ic/gates/world/blocks/Pump.java

@@ -4,6 +4,7 @@
 import org.bukkit.Material;
 import org.bukkit.Server;
 import org.bukkit.block.Block;
+import org.bukkit.block.data.Levelled;
 import org.bukkit.inventory.InventoryHolder;
 import org.bukkit.inventory.ItemStack;
 
@@ -73,14 +74,15 @@ public boolean searchNear(InventoryHolder c, Block block, int depth) {
     }
 
     public boolean check(InventoryHolder c, Block liquid, int depth) {
-
-        if (!liquid.isLiquid()) return false;
-        if (liquid.getData() == 0x0) {
+        if (!liquid.isLiquid() || !(liquid.getBlockData() instanceof Levelled levelled)) {
+            return false;
+        }
+        if (levelled.getLevel() == 0x0) {
             if (addToChest(c, liquid)) {
                 liquid.setType(Material.AIR);
                 return true;
             }
-        } else if (searchNear(c, liquid, depth + 1)) return true;
+        } else return searchNear(c, liquid, depth + 1);
         return false;
     }