update case statement in dictlike-polymorphic

this was using a long-ago not working form of case().

Change-Id: I39c7cec2e46dd215d7acb7d3ee6debd30fa1ec34

diff --git a/examples/vertical/dictlike-polymorphic.py b/examples/vertical/dictlike-polymorphic.py
index 23a6e093d9c9bad3fd1750035f0079b490f40479..4c81af6d543db3de53de8bc53f3116cc1ec55179 100644 (file)
--- a/examples/vertical/dictlike-polymorphic.py
+++ b/examples/vertical/dictlike-polymorphic.py
@@ -83,7 +83,7 @@ class PolymorphicVerticalProperty(object):
                 for attribute, discriminator in pairs
                 if attribute is not None
             ]
-            return case(whens, self.cls.type, null())
+            return case(whens, value=self.cls.type, else_=null())
 
         def __eq__(self, other):
             return self._case() == cast(other, String)