In which cases is a NeedRetryException thrown?

[vic0824]

ArcadeDB Version:

v24.1.1 (build 48e937e/1707163239355/main)

OS and JDK Version:

Linux 2.6.32-754.35.1.el6.x86_64 - OpenJDK 64-Bit Server VM 11.0.20 (Corretto-11.0.20.8.1)

Expected behavior

The manual says that using the transaction method scope lambda is equivalent to the begin/commit/rollback idiom, where the rollback occurs in case an Exception is thrown. However, in other places the manual says that in case a NeedRetryException is thrown, the transaction is automatically repeated.

Actual behavior

In the examples of a manual begin/commit/rollback sequence, the type of exception caught is Exception, which is a parent of NeedRetryException, so it seems that a retry never actually occurs.
What is the actual behaviour of the transaction method?

Steps to reproduce

N/A