Add release notes wrt #4953, minor tweaks

Author: cowtowncoder

release-notes/CREDITS-2.x

@@ -1909,3 +1909,7 @@ Floris Westerman (@FWest98)
  * Reported #4934: `DeserializationContext.readTreeAsValue()` handles null nodes
    differently from `ObjectMapper.treeToValue()`
   (2.19.0)
+
+Joren Inghelbrecht (@jin-harmoney)
+ * Contributed #4953: Allow clearing all caches to avoid classloader leaks
+  (2.19.0)

release-notes/VERSION-2.x

@@ -46,6 +46,8 @@ Project: jackson-databind
 #4934: `DeserializationContext.readTreeAsValue()` handles null nodes
   differently from `ObjectMapper.treeToValue()`
  (reported by Floris W)
+#4953: Allow clearing all caches to avoid classloader leaks
+ (contributed by Joren I)
 
 2.18.3 (not yet released)
 

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

@@ -4796,17 +4796,18 @@ public void acceptJsonFormatVisitor(JavaType type, JsonFormatVisitorWrapper visi
      */
 
     /**
-     * Method that will clear all caches.
-     * This can be used to remove memory usage or to force re-construction cached entries after configuration changes.
-     * Can also be used to avoid class-loader memory leaks when reloading applications.
-
+     * Method that will clear all caches this mapper owns.
+     *<p>
+     * This method should not be needed in normal operation, but may be
+     * useful to avoid class-loader memory leaks when reloading applications.
+     *
      * @since 2.19
      */
     public void clearCaches() {
         _rootDeserializers.clear();
-        getTypeFactory().clearCache();
-        getDeserializationContext().flushCachedDeserializers();
-        getSerializerProvider().flushCachedSerializers();
+        _typeFactory.clearCache();
+        _deserializationContext.flushCachedDeserializers();
+        _serializerProvider.flushCachedSerializers();
     }
 
     /*