When comparing the various SDK examples in the error handling guide I noticed the following inconsistencies:

• The TypeScript & Go examples always re-throws the exception even if it is not a terminal on (rethrow is outside e instanceof restate.TerminalError).
• The Java example does not actually re-throw the exception.

(I'm a Java developer so I may be wrong on the ts and go stuff).

If my observations are correct, I will be happy to contribute a PR, but I suspect it will be faster for you to fix it yourselves.