[JavaSpring] Call parent fluent setters from child

[robinjhector]

This closes #16496

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Ping JavaSpring committee: @javisst @borsch @banlevente @Zomzog @martin-mfg

[robinjhector]

Couldn't find the correct branch to target this PR towards, please advise :)

[wing328]

@robinjhector is this a breaking change?

I'll create 7.1.x and 8.0.x tomorrow.

[wing328]

Looks to me the change is transparent to users consuming the auto-generated code. Please correct me if I'm wrong.

[robinjhector]

Looks to me the change is transparent to users consuming the auto-generated code. Please correct me if I'm wrong.

It should be transparent, that is my view as well 👍

[wing328]

👌 let's target current master.

[wing328]

LGTM. Thanks for the PR.