Fix get_bob_tags to return default tags

When passing None as estimator to get_bob_tags, returns the default tags.

bob/pipelines/wrappers.py

@@ -149,7 +149,12 @@ def get_bob_tags(estimator=None, force_tags=None):
         "bob_features_load_fn": bob.io.base.load,
         "bob_fit_supports_dask_array": False,
     }
-    estimator_tags = estimator._get_tags()
+    if hasattr(estimator, "_get_tags"):
+        estimator_tags = estimator._get_tags()
+    else:
+        estimator_tags = (
+            estimator._more_tags() if hasattr(estimator, "_more_tags") else {}
+        )
     return {**default_tags, **estimator_tags, **force_tags}
 
 

[Amir MOHAMMADI]

This doesn't look right. https://scikit-learn.org/stable/developers/develop.html#estimator-tags

[Yannick DAYER]

Ok, I'll only look at _get_tags.