Missing NotImplementedError in abstract method

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/scripts/analyze_outcomes.py b/tests/scripts/analyze_outcomes.py
index 8123ea1..decc334 100755
--- a/tests/scripts/analyze_outcomes.py
+++ b/tests/scripts/analyze_outcomes.py
@@ -135,6 +135,7 @@
 
     def section_name(self) -> str:
         """The section name to use in results."""
+        raise NotImplementedError
 
     def ignored_tests(self, test_suite: str) -> typing.Iterator[IgnoreEntry]:
         """Generate the ignore list for the specified test suite."""