Finish converting all events to jspecify annotations

patches/api/0222-Added-PlayerTradeEvent.patch

@@ -13,10 +13,10 @@ event being about villager trades.
 
 diff --git a/src/main/java/io/papermc/paper/event/player/PlayerPurchaseEvent.java b/src/main/java/io/papermc/paper/event/player/PlayerPurchaseEvent.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43e9b50bfc
+index 0000000000000000000000000000000000000000..1691b53f157f17117116e841cbfc769ea0e14364
 --- /dev/null
 +++ b/src/main/java/io/papermc/paper/event/player/PlayerPurchaseEvent.java
-@@ -0,0 +1,109 @@
+@@ -0,0 +1,104 @@
 +package io.papermc.paper.event.player;
 +
 +import com.google.common.base.Preconditions;
@@ -26,11 +26,12 @@ index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43
 +import org.bukkit.event.player.PlayerEvent;
 +import org.bukkit.inventory.MerchantRecipe;
 +import org.jetbrains.annotations.ApiStatus;
-+import org.jetbrains.annotations.NotNull;
++import org.jspecify.annotations.NullMarked;
 +
 +/**
 + * Called when a player trades with a standalone merchant GUI.
 + */
++@NullMarked
 +public class PlayerPurchaseEvent extends PlayerEvent implements Cancellable {
 +
 +    private static final HandlerList HANDLER_LIST = new HandlerList();
@@ -42,12 +43,9 @@ index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43
 +    private boolean cancelled;
 +
 +    @ApiStatus.Internal
-+    public PlayerPurchaseEvent(@NotNull Player player,
-+                               @NotNull MerchantRecipe trade,
-+                               boolean rewardExp,
-+                               boolean increaseTradeUses) {
++    public PlayerPurchaseEvent(final Player player, final MerchantRecipe trade, final boolean rewardExp, final boolean increaseTradeUses) {
 +        super(player);
-+        setTrade(trade);
++        this.trade = trade;
 +        this.rewardExp = rewardExp;
 +        this.increaseTradeUses = increaseTradeUses;
 +    }
@@ -57,7 +55,6 @@ index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43
 +     *
 +     * @return the trade
 +     */
-+    @NotNull
 +    public MerchantRecipe getTrade() {
 +        return this.trade;
 +    }
@@ -67,7 +64,7 @@ index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43
 +     *
 +     * @param trade the trade to use
 +     */
-+    public void setTrade(@NotNull MerchantRecipe trade) {
++    public void setTrade(final MerchantRecipe trade) {
 +        Preconditions.checkArgument(trade != null, "Trade cannot be null!");
 +        this.trade = trade;
 +    }
@@ -84,7 +81,7 @@ index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43
 +     *
 +     * @param rewardExp try to reward exp
 +     */
-+    public void setRewardExp(boolean rewardExp) {
++    public void setRewardExp(final boolean rewardExp) {
 +        this.rewardExp = rewardExp;
 +    }
 +
@@ -100,7 +97,7 @@ index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43
 +     *
 +     * @param increaseTradeUses {@code true} to count, {@code false} otherwise
 +     */
-+    public void setIncreaseTradeUses(boolean increaseTradeUses) {
++    public void setIncreaseTradeUses(final boolean increaseTradeUses) {
 +        this.increaseTradeUses = increaseTradeUses;
 +    }
 +
@@ -110,17 +107,15 @@ index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43
 +    }
 +
 +    @Override
-+    public void setCancelled(boolean cancel) {
++    public void setCancelled(final boolean cancel) {
 +        this.cancelled = cancel;
 +    }
 +
-+    @NotNull
 +    @Override
 +    public HandlerList getHandlers() {
 +        return HANDLER_LIST;
 +    }
 +
-+    @NotNull
 +    public static HandlerList getHandlerList() {
 +        return HANDLER_LIST;
 +    }
@@ -128,7 +123,7 @@ index 0000000000000000000000000000000000000000..61c62877c38e27eacc20aa43ef02dc43
 +}
 diff --git a/src/main/java/io/papermc/paper/event/player/PlayerTradeEvent.java b/src/main/java/io/papermc/paper/event/player/PlayerTradeEvent.java
 new file mode 100755
-index 0000000000000000000000000000000000000000..559d1a3c783e6c726f48d1c88b2ff8c0888890ac
+index 0000000000000000000000000000000000000000..46bdc178c19feb7dbb71eebee6d0774cf16c1042
 --- /dev/null
 +++ b/src/main/java/io/papermc/paper/event/player/PlayerTradeEvent.java
 @@ -0,0 +1,32 @@
@@ -138,17 +133,18 @@ index 0000000000000000000000000000000000000000..559d1a3c783e6c726f48d1c88b2ff8c0
 +import org.bukkit.entity.Player;
 +import org.bukkit.inventory.MerchantRecipe;
 +import org.jetbrains.annotations.ApiStatus;
-+import org.jetbrains.annotations.NotNull;
++import org.jspecify.annotations.NullMarked;
 +
 +/**
 + * Called when a player trades with a villager or wandering trader
 + */
++@NullMarked
 +public class PlayerTradeEvent extends PlayerPurchaseEvent {
 +
 +    private final AbstractVillager villager;
 +
 +    @ApiStatus.Internal
-+    public PlayerTradeEvent(@NotNull Player player, @NotNull AbstractVillager villager, @NotNull MerchantRecipe trade, boolean rewardExp, boolean increaseTradeUses) {
++    public PlayerTradeEvent(final Player player, final AbstractVillager villager, final MerchantRecipe trade, final boolean rewardExp, final boolean increaseTradeUses) {
 +        super(player, trade, rewardExp, increaseTradeUses);
 +        this.villager = villager;
 +    }
@@ -158,7 +154,6 @@ index 0000000000000000000000000000000000000000..559d1a3c783e6c726f48d1c88b2ff8c0
 +     *
 +     * @return the villager or wandering trader
 +     */
-+    @NotNull
 +    public AbstractVillager getVillager() {
 +        return this.villager;
 +    }