Update release notes wrt #3533

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -51,6 +51,8 @@ Project: jackson-databind
   from parser nor use real defaults
 #3530: Change LRUMap to just evict one entry when maxEntries reached
  (contributed by @pjfanning)
+#3533: Deserialize missing value of `EXTERNAL_PROPERTY` type using
+  custom `NullValueProvider`
 #3535: Replace `JsonNode.with()` with `JsonNode.withObject()`
 #3559: Support `null`-valued `Map` fields with "any setter"
 

src/main/java/com/fasterxml/jackson/databind/deser/impl/ExternalTypeHandler.java

@@ -297,7 +297,8 @@ public Object complete(JsonParser p, DeserializationContext ctxt,
                             "Missing property '%s' for external type id '%s'",
                             prop.getName(), _properties[i].getTypePropertyName());
                 }
-
+                // 03-Aug-2022, tatu: [databind#3533] to handle absent value matching
+                //    present type id
                 values[i] = _deserializeMissingToken(p, ctxt, i, typeId);
             }
 
@@ -358,6 +359,7 @@ protected final Object _deserialize(JsonParser p, DeserializationContext ctxt,
         return _properties[index].getProperty().deserialize(mp, ctxt);
     }
 
+    // 03-Aug-2022, tatu: [databind#3533] to handle absent value matching:
     @SuppressWarnings("resource")
     protected final Object _deserializeMissingToken(JsonParser p, DeserializationContext ctxt,
             int index, String typeId) throws IOException