diff -r ca7d05086e67 -r a33f67e15345 src/source/conf.py
--- a/src/source/conf.py	Thu Apr 12 14:08:01 2018 +0200
+++ b/src/source/conf.py	Thu Apr 12 18:01:15 2018 +0200
@@ -70,9 +70,12 @@
     'sphinx.ext.autodoc',
     'sphinx.ext.todo',
     'sphinx.ext.coverage',
-    'sphinx.ext.viewcode'
+    'sphinx.ext.viewcode',
+    'repoze.sphinx.autointerface',
 ]
 
+autoclass_content = 'both'
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']