Finish converting all events to jspecify annotations

patches/api/Add-PlayerSignCommandPreprocessEvent.patch

@@ -12,14 +12,13 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 @@ -0,0 +0,0 @@
 +package io.papermc.paper.event.player;
 +
++import java.util.Set;
 +import org.bukkit.block.Sign;
 +import org.bukkit.block.sign.Side;
 +import org.bukkit.entity.Player;
 +import org.bukkit.event.player.PlayerCommandPreprocessEvent;
 +import org.jetbrains.annotations.ApiStatus;
-+import org.jetbrains.annotations.NotNull;
-+
-+import java.util.Set;
++import org.jspecify.annotations.NullMarked;
 +
 +/**
 + * Called when a {@link Player} clicks a side on a sign that causes a command to run.
@@ -27,13 +26,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 + * This command is run with elevated permissions which allows players to access commands on signs they wouldn't
 + * normally be able to run.
 + */
++@NullMarked
 +public class PlayerSignCommandPreprocessEvent extends PlayerCommandPreprocessEvent {
 +
 +    private final Sign sign;
 +    private final Side side;
 +
 +    @ApiStatus.Internal
-+    public PlayerSignCommandPreprocessEvent(@NotNull Player player, @NotNull String message, @NotNull Set<Player> recipients, @NotNull Sign sign, @NotNull Side side) {
++    public PlayerSignCommandPreprocessEvent(final Player player, final String message, final Set<Player> recipients, final Sign sign, final Side side) {
 +        super(player, message, recipients);
 +        this.sign = sign;
 +        this.side = side;
@@ -44,7 +44,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +     *
 +     * @return the sign
 +     */
-+    public @NotNull Sign getSign() {
++    public Sign getSign() {
 +        return this.sign;
 +    }
 +
@@ -53,7 +53,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +     *
 +     * @return the sign side
 +     */
-+    public @NotNull Side getSide() {
++    public Side getSide() {
 +        return this.side;
 +    }
 +}