[Bleeding] Changed event system into a new, much faster design. Huge thanks to @zml2008 & @lahwran.

By: Nathan Adams <dinnerbone@dinnerbone.com>

paper-api/src/main/java/org/bukkit/event/player/PlayerAnimationEvent.java

@@ -2,12 +2,14 @@ package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Represents a player animation event
  */
 @SuppressWarnings("serial")
 public class PlayerAnimationEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
 
     private PlayerAnimationType animationType;
     private boolean isCancelled = false;
@@ -40,4 +42,13 @@ public class PlayerAnimationEvent extends PlayerEvent implements Cancellable {
     public void setCancelled(boolean cancel) {
         this.isCancelled = cancel;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerBedEnterEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.player;
 import org.bukkit.block.Block;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * This event is fired when the player is almost about to enter the bed.
  */
 @SuppressWarnings("serial")
 public class PlayerBedEnterEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
 
     private boolean cancel = false;
     private Block bed;
@@ -34,4 +36,13 @@ public class PlayerBedEnterEvent extends PlayerEvent implements Cancellable {
     public Block getBed() {
         return bed;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerBedLeaveEvent.java

@@ -2,12 +2,14 @@ package org.bukkit.event.player;
 
 import org.bukkit.block.Block;
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 /**
  * This event is fired when the player is leaving a bed.
  */
 @SuppressWarnings("serial")
 public class PlayerBedLeaveEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
 
     private Block bed;
 
@@ -24,4 +26,13 @@ public class PlayerBedLeaveEvent extends PlayerEvent {
     public Block getBed() {
         return bed;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerBucketEmptyEvent.java

@@ -4,6 +4,7 @@ import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 import org.bukkit.inventory.ItemStack;
 
 /**
@@ -11,8 +12,18 @@ import org.bukkit.inventory.ItemStack;
  */
 @SuppressWarnings("serial")
 public class PlayerBucketEmptyEvent extends PlayerBucketEvent {
+    private static final HandlerList handlers = new HandlerList();
     public PlayerBucketEmptyEvent(Player who, Block blockClicked, BlockFace blockFace, Material bucket, ItemStack itemInHand) {
         super(Type.PLAYER_BUCKET_EMPTY, who, blockClicked, blockFace, bucket, itemInHand);
 
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerBucketFillEvent.java

@@ -4,6 +4,7 @@ import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 import org.bukkit.inventory.ItemStack;
 
 /**
@@ -11,7 +12,17 @@ import org.bukkit.inventory.ItemStack;
  */
 @SuppressWarnings("serial")
 public class PlayerBucketFillEvent extends PlayerBucketEvent {
+    private static final HandlerList handlers = new HandlerList();
     public PlayerBucketFillEvent(Player who, Block blockClicked, BlockFace blockFace, Material bucket, ItemStack itemInHand) {
         super(Type.PLAYER_BUCKET_FILL, who, blockClicked, blockFace, bucket, itemInHand);
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerChangedWorldEvent.java

@@ -2,9 +2,11 @@ package org.bukkit.event.player;
 
 import org.bukkit.World;
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 @SuppressWarnings("serial")
 public class PlayerChangedWorldEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
 
     private final World from;
 
@@ -16,4 +18,13 @@ public class PlayerChangedWorldEvent extends PlayerEvent {
     public World getFrom() {
         return from;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerChatEvent.java

@@ -6,12 +6,14 @@ import java.util.Set;
 
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Holds information for player chat and commands
  */
 @SuppressWarnings("serial")
 public class PlayerChatEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     private boolean cancel = false;
     private String message;
     private String format = "<%1$s> %2$s";
@@ -97,4 +99,13 @@ public class PlayerChatEvent extends PlayerEvent implements Cancellable {
     public Set<Player> getRecipients() {
         return recipients;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerCommandPreprocessEvent.java

@@ -1,6 +1,7 @@
 package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called early in the command handling process. This event is only
@@ -8,7 +9,17 @@ import org.bukkit.entity.Player;
  */
 @SuppressWarnings("serial")
 public class PlayerCommandPreprocessEvent extends PlayerChatEvent {
+    private static final HandlerList handlers = new HandlerList();
     public PlayerCommandPreprocessEvent(final Player player, final String message) {
         super(Type.PLAYER_COMMAND_PREPROCESS, player, message);
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerDropItemEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.player;
 import org.bukkit.entity.Item;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Thrown when a player drops an item from their inventory
  */
 @SuppressWarnings("serial")
 public class PlayerDropItemEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     private final Item drop;
     private boolean cancel = false;
 
@@ -33,4 +35,13 @@ public class PlayerDropItemEvent extends PlayerEvent implements Cancellable {
     public void setCancelled(boolean cancel) {
         this.cancel = cancel;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerEggThrowEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.player;
 import org.bukkit.entity.CreatureType;
 import org.bukkit.entity.Egg;
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a player throws an egg and it might hatch
  */
 @SuppressWarnings("serial")
 public class PlayerEggThrowEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
     private Egg egg;
     private boolean hatching;
     private CreatureType hatchType;
@@ -94,4 +96,13 @@ public class PlayerEggThrowEvent extends PlayerEvent {
     public void setNumHatches(byte numHatches) {
         this.numHatches = numHatches;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerEvent.java

@@ -7,7 +7,7 @@ import org.bukkit.event.Event;
  * Represents a player related event
  */
 @SuppressWarnings("serial")
-public class PlayerEvent extends Event {
+public abstract class PlayerEvent extends Event {
     protected Player player;
 
     public PlayerEvent(final Event.Type type, final Player who) {

paper-api/src/main/java/org/bukkit/event/player/PlayerFishEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.player;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
 import org.bukkit.entity.Entity;
+import org.bukkit.event.HandlerList;
 
 /**
  * Thrown when a player is fishing
  */
 @SuppressWarnings("serial")
 public class PlayerFishEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     private final Entity entity;
     private boolean cancel = false;
     private State state;
@@ -45,6 +47,15 @@ public class PlayerFishEvent extends PlayerEvent implements Cancellable {
         return state;
     }
 
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
     /**
      * An enum to specify the state of the fishing
      */

paper-api/src/main/java/org/bukkit/event/player/PlayerGameModeChangeEvent.java

@@ -3,9 +3,11 @@ package org.bukkit.event.player;
 import org.bukkit.GameMode;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 @SuppressWarnings("serial")
 public class PlayerGameModeChangeEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
 
     private boolean cancelled;
     private GameMode newGameMode;
@@ -26,4 +28,13 @@ public class PlayerGameModeChangeEvent extends PlayerEvent implements Cancellabl
     public GameMode getNewGameMode() {
         return newGameMode;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerInteractEntityEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.player;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Represents an event that is called when a player right clicks an entity.
  */
 @SuppressWarnings("serial")
 public class PlayerInteractEntityEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     protected Entity clickedEntity;
     boolean cancelled = false;
 
@@ -33,4 +35,13 @@ public class PlayerInteractEntityEvent extends PlayerEvent implements Cancellabl
     public Entity getRightClicked() {
         return this.clickedEntity;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerInteractEvent.java

@@ -2,6 +2,7 @@ package org.bukkit.event.player;
 
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
+import org.bukkit.event.HandlerList;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
@@ -13,6 +14,7 @@ import org.bukkit.event.block.Action;
  */
 @SuppressWarnings("serial")
 public class PlayerInteractEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     protected ItemStack item;
     protected Action action;
     protected Block blockClicked;
@@ -173,4 +175,13 @@ public class PlayerInteractEvent extends PlayerEvent implements Cancellable {
     public void setUseItemInHand(Result useItemInHand) {
         this.useItemInHand = useItemInHand;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerInventoryEvent.java

@@ -1,6 +1,7 @@
 package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 import org.bukkit.inventory.Inventory;
 
 /**
@@ -8,6 +9,7 @@ import org.bukkit.inventory.Inventory;
  */
 @SuppressWarnings("serial")
 public class PlayerInventoryEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
     protected Inventory inventory;
 
     public PlayerInventoryEvent(final Player player, final Inventory inventory) {
@@ -23,4 +25,13 @@ public class PlayerInventoryEvent extends PlayerEvent {
     public Inventory getInventory() {
         return inventory;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerItemHeldEvent.java

@@ -1,12 +1,14 @@
 package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 /**
  * Fired when a player changes their currently held item
  */
 @SuppressWarnings("serial")
 public class PlayerItemHeldEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
     private int previous;
     private int current;
 
@@ -33,4 +35,13 @@ public class PlayerItemHeldEvent extends PlayerEvent {
     public int getNewSlot() {
         return current;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerJoinEvent.java

@@ -1,12 +1,14 @@
 package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a player joins a server
  */
 @SuppressWarnings("serial")
 public class PlayerJoinEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
     private String joinMessage;
 
     public PlayerJoinEvent(Player playerJoined, String joinMessage) {
@@ -31,4 +33,13 @@ public class PlayerJoinEvent extends PlayerEvent {
     public void setJoinMessage(String joinMessage) {
         this.joinMessage = joinMessage;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerKickEvent.java

@@ -2,12 +2,14 @@ package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a player gets kicked from the server
  */
 @SuppressWarnings("serial")
 public class PlayerKickEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     private String leaveMessage;
     private String kickReason;
     private Boolean cancel;
@@ -62,4 +64,13 @@ public class PlayerKickEvent extends PlayerEvent implements Cancellable {
     public void setLeaveMessage(String leaveMessage) {
         this.leaveMessage = leaveMessage;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerListener.java

@@ -5,6 +5,7 @@ import org.bukkit.event.Listener;
 /**
  * Handles all events thrown in relation to a Player
  */
+@Deprecated
 public class PlayerListener implements Listener {
     public PlayerListener() {}
 

paper-api/src/main/java/org/bukkit/event/player/PlayerLoginEvent.java

@@ -1,12 +1,14 @@
 package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 /**
  * Stores details for players attempting to log in
  */
 @SuppressWarnings("serial")
 public class PlayerLoginEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
     private Result result;
     private String message;
 
@@ -77,6 +79,15 @@ public class PlayerLoginEvent extends PlayerEvent {
         this.message = message;
     }
 
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
     /**
      * Basic kick reasons for communicating to plugins
      */

paper-api/src/main/java/org/bukkit/event/player/PlayerMoveEvent.java

@@ -4,12 +4,14 @@ import org.bukkit.Location;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
 import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
 
 /**
  * Holds information for player movement events
  */
 @SuppressWarnings("serial")
 public class PlayerMoveEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     private boolean cancel = false;
     private Location from;
     private Location to;
@@ -89,4 +91,13 @@ public class PlayerMoveEvent extends PlayerEvent implements Cancellable {
     public void setTo(Location to) {
         this.to = to;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerPickupItemEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.player;
 import org.bukkit.entity.Item;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Thrown when a player picks an item up from the ground
  */
 @SuppressWarnings("serial")
 public class PlayerPickupItemEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     private final Item item;
     private boolean cancel = false;
     private int remaining;
@@ -44,4 +46,13 @@ public class PlayerPickupItemEvent extends PlayerEvent implements Cancellable {
     public void setCancelled(boolean cancel) {
         this.cancel = cancel;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerPortalEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.player;
 import org.bukkit.Location;
 import org.bukkit.TravelAgent;
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a player completes the portaling process by standing in a portal
  */
 @SuppressWarnings("serial")
 public class PlayerPortalEvent extends PlayerTeleportEvent {
+    private static final HandlerList handlers = new HandlerList();
 
     protected boolean useTravelAgent = true;
 
@@ -35,4 +37,13 @@ public class PlayerPortalEvent extends PlayerTeleportEvent {
     public void setPortalTravelAgent(TravelAgent travelAgent) {
         this.travelAgent = travelAgent;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerPreLoginEvent.java

@@ -2,12 +2,14 @@ package org.bukkit.event.player;
 
 import java.net.InetAddress;
 import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
 
 /**
  * Stores details for players attempting to log in
  */
 @SuppressWarnings("serial")
 public class PlayerPreLoginEvent extends Event {
+    private static final HandlerList handlers = new HandlerList();
     private Result result;
     private String message;
     private String name;
@@ -94,6 +96,15 @@ public class PlayerPreLoginEvent extends Event {
         return ipAddress;
     }
 
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
     /**
      * Basic kick reasons for communicating to plugins
      */

paper-api/src/main/java/org/bukkit/event/player/PlayerQuitEvent.java

@@ -1,12 +1,14 @@
 package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a player leaves a server
  */
 @SuppressWarnings("serial")
 public class PlayerQuitEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
 
     private String quitMessage;
 
@@ -32,4 +34,13 @@ public class PlayerQuitEvent extends PlayerEvent {
     public void setQuitMessage(String quitMessage) {
         this.quitMessage = quitMessage;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerRespawnEvent.java

@@ -2,9 +2,11 @@ package org.bukkit.event.player;
 
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
 
 @SuppressWarnings("serial")
 public class PlayerRespawnEvent extends PlayerEvent {
+    private static final HandlerList handlers = new HandlerList();
     private Location respawnLocation;
     private boolean isBedSpawn;
 
@@ -40,4 +42,13 @@ public class PlayerRespawnEvent extends PlayerEvent {
     public boolean isBedSpawn() {
         return this.isBedSpawn;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerTeleportEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.player;
 import org.bukkit.Location;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
 
 /**
  * Holds information for player teleport events
  */
 @SuppressWarnings("serial")
 public class PlayerTeleportEvent extends PlayerMoveEvent {
+    private static final HandlerList handlers = new HandlerList();
     private TeleportCause cause = TeleportCause.UNKNOWN;
 
     public PlayerTeleportEvent(Player player, Location from, Location to) {
@@ -58,4 +60,13 @@ public class PlayerTeleportEvent extends PlayerMoveEvent {
          */
         UNKNOWN;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerToggleSneakEvent.java

@@ -2,12 +2,14 @@ package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a player toggles their sneaking state
  */
 @SuppressWarnings("serial")
 public class PlayerToggleSneakEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     private boolean isSneaking;
     private boolean cancel = false;
 
@@ -32,4 +34,13 @@ public class PlayerToggleSneakEvent extends PlayerEvent implements Cancellable {
     public void setCancelled(boolean cancel) {
         this.cancel = cancel;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerToggleSprintEvent.java

@@ -2,12 +2,14 @@ package org.bukkit.event.player;
 
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a player toggles their sprinting state
  */
 @SuppressWarnings("serial")
 public class PlayerToggleSprintEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
     private boolean isSprinting;
     private boolean cancel = false;
 
@@ -32,4 +34,13 @@ public class PlayerToggleSprintEvent extends PlayerEvent implements Cancellable
     public void setCancelled(boolean cancel) {
         this.cancel = cancel;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/player/PlayerVelocityEvent.java

@@ -3,10 +3,12 @@ package org.bukkit.event.player;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Cancellable;
 import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
 import org.bukkit.util.Vector;
 
 @SuppressWarnings("serial")
 public class PlayerVelocityEvent extends PlayerEvent implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
 
     /**
      * Holds information for player velocity events
@@ -61,4 +63,13 @@ public class PlayerVelocityEvent extends PlayerEvent implements Cancellable {
     public void setVelocity(Vector velocity) {
         this.velocity = velocity;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }