Return os.listdir from generator

AeroPath.py

@@ -128,4 +128,8 @@ class AeroPath(datasets.GeneratorBasedBuilder):
         # By default the archives will be extracted and a path to a cached folder where they are extracted is returned instead of the archive
         urls = _URLS[self.config.name]
         data_dir = dl_manager.download_and_extract(urls)
-        return None
+
+        print("data_dir:", data_dir)
+
+        return [os.path.join(data_dir, x) for x in os.listdir(data_dir)]
+