Push importlib ABC hierarchy chart.
diff --git a/Doc/library/importlib.rst b/Doc/library/importlib.rst
index 1ecee0b..d217b0a 100644
--- a/Doc/library/importlib.rst
+++ b/Doc/library/importlib.rst
@@ -121,6 +121,21 @@
used by :keyword:`import`. Some subclasses of the core abstract base classes
are also provided to help in implementing the core ABCs.
+ABC hierarchy::
+
+ object
+ +-- Finder
+ | +-- MetaPathFinder
+ | +-- PathEntryFinder
+ +-- Loader
+ +-- ResourceLoader --------+
+ +-- InspectLoader |
+ +-- ExecutionLoader --+
+ +-- FileLoader
+ +-- SourceLoader
+ +-- PyLoader
+ +-- PyPycLoader
+
.. class:: Finder