Add no cover for abstract method.

diff --git a/dns/enum.py b/dns/enum.py
index 11536f2b2788ca2bd35ec2cb13eae1903e7e4db9..b822dd51de34ee32e1f95cdcc6bdd6f0abdd96c6 100644 (file)
--- a/dns/enum.py
+++ b/dns/enum.py
@@ -75,7 +75,7 @@ class IntEnum(enum.IntEnum):
 
     @classmethod
     def _maximum(cls):
-        raise NotImplementedError
+        raise NotImplementedError  # pragma: no cover
 
     @classmethod
     def _short_name(cls):