Another attempt for classes file download.

bird-data.py

@@ -31,19 +31,20 @@ _URLS = {
     "test": f"{_REPO}/data/test.zip",
 }
 
-_CLASSES_FILE = f"{_REPO}/classes.txt"
+_CLASSES_URL = f"{_REPO}/classes.txt"
 
 class Beans(datasets.GeneratorBasedBuilder):
     """Beans plant leaf images dataset."""
 
     def _info(self):
+        names_file = dl_manager.download(_CLASSES_URL)
         return datasets.DatasetInfo(
             description=_DESCRIPTION,
             features=datasets.Features(
                 {
                     "image_file_path": datasets.Value("string"),
                     "image": datasets.Image(),
-                    "labels": datasets.features.ClassLabel(names_file=_CLASSES_FILE),
+                    "labels": datasets.features.ClassLabel(names_file=names_file),
                 }
             ),
             supervised_keys=("image", "labels"),