Add EntityTeleportEndGatewayEvent

paper-api/src/main/java/com/destroystokyo/paper/event/entity/EntityTeleportEndGatewayEvent.java

@@ -0,0 +1,33 @@
+package com.destroystokyo.paper.event.entity;
+
+import org.bukkit.Location;
+import org.bukkit.block.EndGateway;
+import org.bukkit.entity.Entity;
+import org.bukkit.event.entity.EntityTeleportEvent;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+
+/**
+ * Fired any time an entity attempts to teleport in an end gateway
+ */
+@NullMarked
+public class EntityTeleportEndGatewayEvent extends EntityTeleportEvent {
+
+    private final EndGateway gateway;
+
+    @ApiStatus.Internal
+    public EntityTeleportEndGatewayEvent(final Entity entity, final Location from, final Location to, final EndGateway gateway) {
+        super(entity, from, to);
+        this.gateway = gateway;
+    }
+
+    /**
+     * The gateway triggering the teleport
+     *
+     * @return EndGateway used
+     */
+    public EndGateway getGateway() {
+        return this.gateway;
+    }
+
+}