dynamically access batch options (#41361)

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/Bus/Batch.php

@@ -467,4 +467,15 @@ public function jsonSerialize()
     {
         return $this->toArray();
     }
+
+    /**
+     * Dynamically access the batch's "options" via properties.
+     *
+     * @param  string  $key
+     * @return mixed
+     */
+    public function __get($key)
+    {
+        return $this->options[$key] ?? null;
+    }
 }