Begin switching to JSpecify annotations (#11448)

* Begin switching to JSpecify annotations

* more

* fixes

patches/api/0439-Add-ShulkerDuplicateEvent.patch

@@ -6,10 +6,10 @@ Subject: [PATCH] Add ShulkerDuplicateEvent
 
 diff --git a/src/main/java/io/papermc/paper/event/entity/ShulkerDuplicateEvent.java b/src/main/java/io/papermc/paper/event/entity/ShulkerDuplicateEvent.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..88d8278e49f1bb32e97ee551d8ad31d4a59534e2
+index 0000000000000000000000000000000000000000..d427a67a5c7e44aee78d21a7b344b8bb19235dc7
 --- /dev/null
 +++ b/src/main/java/io/papermc/paper/event/entity/ShulkerDuplicateEvent.java
-@@ -0,0 +1,71 @@
+@@ -0,0 +1,68 @@
 +package io.papermc.paper.event.entity;
 +
 +import org.bukkit.entity.Shulker;
@@ -17,13 +17,14 @@ index 0000000000000000000000000000000000000000..88d8278e49f1bb32e97ee551d8ad31d4
 +import org.bukkit.event.HandlerList;
 +import org.bukkit.event.entity.EntityEvent;
 +import org.jetbrains.annotations.ApiStatus;
-+import org.jetbrains.annotations.NotNull;
++import org.jspecify.annotations.NullMarked;
 +
 +/**
 + * Fired when a shulker duplicates itself by spawning a new shulker.
 + * <p>
 + * The event is fired prior to the newly created shulker, accessible via {@link #getEntity()}, being added to the world.
 + */
++@NullMarked
 +public class ShulkerDuplicateEvent extends EntityEvent implements Cancellable {
 +
 +    private static final HandlerList HANDLER_LIST = new HandlerList();
@@ -32,7 +33,7 @@ index 0000000000000000000000000000000000000000..88d8278e49f1bb32e97ee551d8ad31d4
 +    private boolean cancelled;
 +
 +    @ApiStatus.Internal
-+    public ShulkerDuplicateEvent(@NotNull Shulker child, @NotNull Shulker parent) {
++    public ShulkerDuplicateEvent(final Shulker child, final Shulker parent) {
 +        super(child);
 +        this.parent = parent;
 +    }
@@ -44,7 +45,6 @@ index 0000000000000000000000000000000000000000..88d8278e49f1bb32e97ee551d8ad31d4
 +     * @return the newly duplicated shulker.
 +     */
 +    @Override
-+    @NotNull
 +    public Shulker getEntity() {
 +        return (Shulker) super.getEntity();
 +    }
@@ -55,7 +55,6 @@ index 0000000000000000000000000000000000000000..88d8278e49f1bb32e97ee551d8ad31d4
 +     *
 +     * @return the previously existing shulker which duplicated.
 +     */
-+    @NotNull
 +    public Shulker getParent() {
 +        return this.parent;
 +    }
@@ -66,17 +65,15 @@ index 0000000000000000000000000000000000000000..88d8278e49f1bb32e97ee551d8ad31d4
 +    }
 +
 +    @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;
 +    }