More generic directory hierarchy.

3/marshal.py

@@ -0,0 +1,15 @@
+"""Stub file for the 'marshal' module."""
+# This is an autogenerated file. It serves as a starting point
+# for a more precise manual annotation of this module.
+# Feel free to edit the source below, but remove this header when you do.
+
+from typing import List, Tuple, Dict, Undefined, GenericType
+
+def dump(a, b, *args, **kwargs) -> object: ...
+
+def dumps(a, *args, **kwargs) -> object: ...
+
+def load(*args, **kwargs) -> object:
+    raise TypeError()
+
+def loads(a) -> object: ...