Finish converting all events to jspecify annotations

patches/api/Add-PlayerShieldDisableEvent.patch

@@ -30,7 +30,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +import org.bukkit.event.HandlerList;
 +import org.bukkit.event.player.PlayerEvent;
 +import org.jetbrains.annotations.ApiStatus;
-+import org.jetbrains.annotations.NotNull;
++import org.jspecify.annotations.NullMarked;
 +
 +/**
 + * Called whenever a players shield is disabled due to an attack from another entity that was capable of disabling the
@@ -41,6 +41,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 + * It follows that, if this event is cancelled, no {@link PlayerItemCooldownEvent} is called as the shield is never
 + * disabled in the first place.
 + */
++@NullMarked
 +public class PlayerShieldDisableEvent extends PlayerEvent implements Cancellable {
 +
 +    private static final HandlerList HANDLER_LIST = new HandlerList();
@@ -51,7 +52,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    private boolean cancelled;
 +
 +    @ApiStatus.Internal
-+    public PlayerShieldDisableEvent(@NotNull final Player player, @NotNull final Entity damager, final int cooldown) {
++    public PlayerShieldDisableEvent(final Player player, final Entity damager, final int cooldown) {
 +        super(player);
 +        this.damager = damager;
 +        this.cooldown = cooldown;
@@ -62,7 +63,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +     *
 +     * @return the entity instance that damaged the player in a way that caused the shield to be disabled.
 +     */
-+    @NotNull
 +    public Entity getDamager() {
 +        return this.damager;
 +    }
@@ -87,7 +87,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +     *
 +     * @param cooldown cooldown in ticks, has to be a positive number
 +     */
-+    public void setCooldown(int cooldown) {
++    public void setCooldown(final int cooldown) {
 +        Preconditions.checkArgument(cooldown >= 0, "The cooldown has to be equal to or greater than 0!");
 +        this.cooldown = cooldown;
 +    }
@@ -102,13 +102,11 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +        this.cancelled = cancel;
 +    }
 +
-+    @NotNull
 +    @Override
 +    public HandlerList getHandlers() {
 +        return HANDLER_LIST;
 +    }
 +
-+    @NotNull
 +    public static HandlerList getHandlerList() {
 +        return HANDLER_LIST;
 +    }