diff --git a/src/diana/sgf.py b/src/diana/sgf.py
--- a/src/diana/sgf.py
+++ b/src/diana/sgf.py
@@ -3,4 +3,10 @@
 		self.collection=collection
 
 	def getGameRecords(self):
-		pass
\ No newline at end of file
+		pass
+
+class Game:
+	pass
+
+class Node:
+	pass