Add proper Bukkit API event usage.

src/main/java/world/bentobox/challenges/events/ChallengeCompletedEvent.java

@@ -2,6 +2,7 @@ package world.bentobox.challenges.events;
 
 
 
+import org.bukkit.event.HandlerList;
 import java.util.UUID;
 
 import world.bentobox.bentobox.api.events.BentoBoxEvent;
@@ -127,6 +128,34 @@ public class ChallengeCompletedEvent extends BentoBoxEvent
 	}
 
 
+// ---------------------------------------------------------------------
+// Section: Handler methods
+// ---------------------------------------------------------------------
+
+
+	/**
+	 * Gets handlers.
+	 *
+	 * @return the handlers
+	 */
+	@Override
+	public HandlerList getHandlers()
+	{
+		return ChallengeCompletedEvent.handlers;
+	}
+
+
+	/**
+	 * Gets handlers.
+	 *
+	 * @return the handlers
+	 */
+	public static HandlerList getHandlerList()
+	{
+		return ChallengeCompletedEvent.handlers;
+	}
+
+
 // ---------------------------------------------------------------------
 // Section: Variables
 // ---------------------------------------------------------------------
@@ -151,4 +180,9 @@ public class ChallengeCompletedEvent extends BentoBoxEvent
 	 * Count of completions
 	 */
 	private int completionCount;
+
+	/**
+	 * Event listener list for current
+	 */
+	private static final HandlerList handlers = new HandlerList();
 }

src/main/java/world/bentobox/challenges/events/ChallengeResetAllEvent.java

@@ -1,6 +1,7 @@
 package world.bentobox.challenges.events;
 
 
+import org.bukkit.event.HandlerList;
 import java.util.UUID;
 
 import world.bentobox.bentobox.api.events.BentoBoxEvent;
@@ -125,6 +126,34 @@ public class ChallengeResetAllEvent extends BentoBoxEvent
 	}
 
 
+// ---------------------------------------------------------------------
+// Section: Handler methods
+// ---------------------------------------------------------------------
+
+
+	/**
+	 * Gets handlers.
+	 *
+	 * @return the handlers
+	 */
+	@Override
+	public HandlerList getHandlers()
+	{
+		return ChallengeResetAllEvent.handlers;
+	}
+
+
+	/**
+	 * Gets handlers.
+	 *
+	 * @return the handlers
+	 */
+	public static HandlerList getHandlerList()
+	{
+		return ChallengeResetAllEvent.handlers;
+	}
+
+
 // ---------------------------------------------------------------------
 // Section: Variables
 // ---------------------------------------------------------------------
@@ -149,4 +178,9 @@ public class ChallengeResetAllEvent extends BentoBoxEvent
 	 * Reset Reason
 	 */
 	private String reason;
+
+	/**
+	 * Event listener list for current
+	 */
+	private static final HandlerList handlers = new HandlerList();
 }

src/main/java/world/bentobox/challenges/events/ChallengeResetEvent.java

@@ -1,6 +1,7 @@
 package world.bentobox.challenges.events;
 
 
+import org.bukkit.event.HandlerList;
 import java.util.UUID;
 
 import world.bentobox.bentobox.api.events.BentoBoxEvent;
@@ -122,6 +123,34 @@ public class ChallengeResetEvent extends BentoBoxEvent
 	}
 
 
+// ---------------------------------------------------------------------
+// Section: Handler methods
+// ---------------------------------------------------------------------
+
+
+	/**
+	 * Gets handlers.
+	 *
+	 * @return the handlers
+	 */
+	@Override
+	public HandlerList getHandlers()
+	{
+		return ChallengeResetEvent.handlers;
+	}
+
+
+	/**
+	 * Gets handlers.
+	 *
+	 * @return the handlers
+	 */
+	public static HandlerList getHandlerList()
+	{
+		return ChallengeResetEvent.handlers;
+	}
+
+
 // ---------------------------------------------------------------------
 // Section: Variables
 // ---------------------------------------------------------------------
@@ -146,4 +175,9 @@ public class ChallengeResetEvent extends BentoBoxEvent
 	 * Reset Reason
 	 */
 	private String reason;
+
+	/**
+	 * Event listener list for current
+	 */
+	private static final HandlerList handlers = new HandlerList();
 }

src/main/java/world/bentobox/challenges/events/LevelCompletedEvent.java

@@ -1,6 +1,7 @@
 package world.bentobox.challenges.events;
 
 
+import org.bukkit.event.HandlerList;
 import java.util.UUID;
 
 import world.bentobox.bentobox.api.events.BentoBoxEvent;
@@ -101,6 +102,34 @@ public class LevelCompletedEvent extends BentoBoxEvent
 	}
 
 
+// ---------------------------------------------------------------------
+// Section: Handler methods
+// ---------------------------------------------------------------------
+
+
+	/**
+	 * Gets handlers.
+	 *
+	 * @return the handlers
+	 */
+	@Override
+	public HandlerList getHandlers()
+	{
+		return LevelCompletedEvent.handlers;
+	}
+
+
+	/**
+	 * Gets handlers.
+	 *
+	 * @return the handlers
+	 */
+	public static HandlerList getHandlerList()
+	{
+		return LevelCompletedEvent.handlers;
+	}
+
+
 // ---------------------------------------------------------------------
 // Section: Variables
 // ---------------------------------------------------------------------
@@ -120,4 +149,9 @@ public class LevelCompletedEvent extends BentoBoxEvent
 	 * Indicates if admin completes challenge
 	 */
 	private boolean admin;
+
+	/**
+	 * Event listener list for current
+	 */
+	private static final HandlerList handlers = new HandlerList();
 }