Begin implementation of CheckStyle style checking

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/entity/minecart/HopperMinecart.java

@@ -10,16 +10,16 @@ import org.bukkit.loot.Lootable;
 public interface HopperMinecart extends Minecart, InventoryHolder, Lootable {
 
     /**
-     * Checks whether or not this Minecart will pick up 
+     * Checks whether or not this Minecart will pick up
      * items into its inventory.
-     * 
+     *
      * @return true if the Minecart will pick up items
      */
     boolean isEnabled();
 
     /**
      * Sets whether this Minecart will pick up items.
-     * 
+     *
      * @param enabled new enabled state
      */
     void setEnabled(boolean enabled);