src/jdk.compiler/share/classes/com/sun/tools/javac/tree/JCTree.java

*** 840,849 ****
--- 840,852 ----
          public JCBlock body;
          /** default value, for annotation types */
          public JCExpression defaultValue;
          /** method symbol */
          public MethodSymbol sym;
+         /** nascent value that evolves into the return value for a value factory */
+         public VarSymbol factoryProduct;
+ 
          protected JCMethodDecl(JCModifiers mods,
                              Name name,
                              JCExpression restype,
                              List<JCTypeParameter> typarams,
                              JCVariableDecl recvparam,