How to properly use transactions in queues?

Question

Laravel

There is some functionality for importing data from xml using Queues:

ImportChain::withChain([
                new Import1(),
                new Import2(),
                new Import3(),
            ])->dispatch();

In the Import {1-3} works in the handle, the models are called, in which files are read and data is written to the database.
How to correctly make a transaction for all imports?
Those. everything that will be executed in Import {1-3} went as a single transaction?

Answer 1

do everything in 1 call.