--- a/src/pyams_thesaurus/interfaces/thesaurus.py	Wed Jun 17 10:01:13 2015 +0200
+++ b/src/pyams_thesaurus/interfaces/thesaurus.py	Tue Jun 30 14:19:52 2015 +0200
@@ -90,6 +90,9 @@
     def reset_terms_parent(self):
         """Reset thesaurus terms parent attribute"""
 
+    def get_top_terms(self, extract=None):
+        """Get top terms, for given extract or for the whole thesaurus"""
+
     def reset_top_terms(self):
         """Reset thesaurus top terms"""