Finish converting all events to jspecify annotations

patches/api/Add-event-for-player-editing-sign.patch

@@ -20,13 +20,14 @@ 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 when a player begins editing a sign's text.
 + * <p>
 + * Cancelling this event stops the sign editing menu from opening.
 + */
++@NullMarked
 +public class PlayerOpenSignEvent extends PlayerEvent implements Cancellable {
 +
 +    private static final HandlerList HANDLER_LIST = new HandlerList();
@@ -38,7 +39,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    private boolean cancelled;
 +
 +    @ApiStatus.Internal
-+    public PlayerOpenSignEvent(final @NotNull Player editor, final @NotNull Sign sign, final @NotNull Side side, final @NotNull Cause cause) {
++    public PlayerOpenSignEvent(final Player editor, final Sign sign, final Side side, final Cause cause) {
 +        super(editor);
 +        this.sign = sign;
 +        this.side = side;
@@ -50,7 +51,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +     *
 +     * @return {@link Sign} that was clicked
 +     */
-+    @NotNull
 +    public Sign getSign() {
 +        return this.sign;
 +    }
@@ -61,7 +61,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +     * @return {@link Side} that was clicked
 +     * @see Sign#getSide(Side)
 +     */
-+    @NotNull
 +    public Side getSide() {
 +        return this.side;
 +    }
@@ -71,7 +70,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +     *
 +     * @return the cause
 +     */
-+    public @NotNull Cause getCause() {
++    public Cause getCause() {
 +        return this.cause;
 +    }
 +
@@ -81,17 +80,15 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    }
 +
 +    @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;
 +    }