Added a note about serialVersionUID and @Synchronized to the feature docs.

website/features/Synchronized.html

@@ -48,6 +48,11 @@
 				just a <code>new Object()</code> as most snippets showing this pattern in action use. Lombok does this because a new object is <em>NOT</em>
 				serializable, but 0-size array is. Therefore, using <code>@Synchronized</code> will not prevent your object from being serialized.
 				</p><p>
+				Having at least one <code>@Synchronized</code> method in your class means there will be a lock field, but if you later remove all such methods,
+				there will no longer be a lock field. That means your predetermined <code>serialVersionUID</code> changes. We suggest you <em>always</em> add
+				a <code>serialVersionUID</code> to your classes if you intend to store them long-term via java's serialization mechanism. If you do so, removing
+				all <code>@Synchronized</code> annotations from your method will not break serialization.
+				</p><p>
 				If you'd like to know why a field is not automatically generated when you choose your own name for the lock object: Because otherwise making a typo
 				in the field name will result in a <em>very</em> hard to find bug!
 				</p>