Begin switching to JSpecify annotations (#11448)

* Begin switching to JSpecify annotations

* more

* fixes

patches/api/0162-Add-WhitelistToggleEvent.patch

@@ -6,22 +6,23 @@ Subject: [PATCH] Add WhitelistToggleEvent
 
 diff --git a/src/main/java/com/destroystokyo/paper/event/server/WhitelistToggleEvent.java b/src/main/java/com/destroystokyo/paper/event/server/WhitelistToggleEvent.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..22fa169c278639f31aec2695259963038de0af8a
+index 0000000000000000000000000000000000000000..b9a59a28c1dec6c174885892ff40d3caaaf409a4
 --- /dev/null
 +++ b/src/main/java/com/destroystokyo/paper/event/server/WhitelistToggleEvent.java
-@@ -0,0 +1,43 @@
+@@ -0,0 +1,42 @@
 +package com.destroystokyo.paper.event.server;
 +
 +import org.bukkit.event.Event;
 +import org.bukkit.event.HandlerList;
 +import org.jetbrains.annotations.ApiStatus;
-+import org.jetbrains.annotations.NotNull;
++import org.jspecify.annotations.NullMarked;
 +
 +/**
 + * This event is fired when whitelist is toggled
 + *
 + * @author Mark Vainomaa
 + */
++@NullMarked
 +public class WhitelistToggleEvent extends Event {
 +
 +    private static final HandlerList HANDLER_LIST = new HandlerList();
@@ -29,7 +30,7 @@ index 0000000000000000000000000000000000000000..22fa169c278639f31aec269525996303
 +    private final boolean enabled;
 +
 +    @ApiStatus.Internal
-+    public WhitelistToggleEvent(boolean enabled) {
++    public WhitelistToggleEvent(final boolean enabled) {
 +        this.enabled = enabled;
 +    }
 +
@@ -42,13 +43,11 @@ index 0000000000000000000000000000000000000000..22fa169c278639f31aec269525996303
 +        return this.enabled;
 +    }
 +
-+    @NotNull
 +    @Override
 +    public HandlerList getHandlers() {
 +        return HANDLER_LIST;
 +    }
 +
-+    @NotNull
 +    public static HandlerList getHandlerList() {
 +        return HANDLER_LIST;
 +    }