...

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/databind/ObjectMapper.java

@@ -477,14 +477,13 @@ public <M extends ObjectMapper, B extends MapperBuilder<M,B>> MapperBuilder<M,B>
     // easier, and we go with that.
     // But note that return direction has to be supported, then, by that state object
     // and NOT anything in here.
-
     Object writeReplace() {
         return _savedBuilderState;
     }
 
     // Just as a sanity check verify there is no attempt at directly instantiating mapper here
     Object readResolve() {
-        throw new IllegalStateException("Should never deserialize `ObjectMapper` directly");
+        throw new IllegalStateException("Should never deserialize `"+getClass().getName()+"` directly");
     }
 
     /*