--- old/src/java.base/share/classes/java/lang/AbstractMethodError.java	2019-08-27 17:26:59.614324386 -0700
+++ new/src/java.base/share/classes/java/lang/AbstractMethodError.java	2019-08-27 17:26:59.438324386 -0700
@@ -37,6 +37,7 @@
  */
 public
 class AbstractMethodError extends IncompatibleClassChangeError {
+    @java.io.Serial
     private static final long serialVersionUID = -1654391082989018462L;
 
     /**