fix missing bit of event

Author: RhythmicSys

src/main/java/adhdmc/simplepms/events/PrivateMessageEvent.java

@@ -2,13 +2,14 @@
 
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
+import org.bukkit.event.Cancellable;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.HashSet;
 
-public class PrivateMessageEvent extends Event {
+public class PrivateMessageEvent extends Event implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
     public PrivateMessageEvent(CommandSender initiator, CommandSender recipient, String messageContent, HashSet<Player> spyingPlayers) {
         this.initiator = initiator;
@@ -17,15 +18,18 @@ public PrivateMessageEvent(CommandSender initiator, CommandSender recipient, Str
         this.spyingPlayers = spyingPlayers;
     }
 
-    @Override
     public @NotNull HandlerList getHandlers() {
         return handlers;
     }
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 
     private CommandSender initiator;
     private CommandSender recipient;
     private String messageContent;
     private HashSet<Player> spyingPlayers;
+    private boolean cancelled;
 
     public CommandSender getInitiator() {
         return initiator;
@@ -42,4 +46,12 @@ public String getMessageContent() {
     public HashSet<Player> getSpyingPlayers() {
         return spyingPlayers;
     }
+
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    public void setCancelled(boolean cancel) {
+        cancelled = cancel;
+    }
 }