src/java.base/share/classes/java/lang/StackWalker.java

@@ -176,11 +176,11 @@
          * The code array gives the actual bytes of Java Virtual Machine code
          * that implement the method.
          *
          * @return the index to the code array of the {@code Code} attribute
          *         containing the execution point represented by this stack frame,
-         *         or a negative number if the method is native.
+         *         or a negative number if the method is native or unavailable.
          *
          * @jvms 4.7.3 The {@code Code} Attribute
          */
         public int getByteCodeIndex();