Suppose I have 2 fluxes:

Flux<TypeA> typeAFlux = ...
Flux<TypeB> typeBFlux = ...

And I can join typeAFlux w/ typeBFlux via typeAFlux.fieldA = typeAFlux.fieldB. How would I go about that while iterating over typeAFlux as such:

typeAFlux.map(ele -> {
TypeB correspondTypeB = <Somehow get TypeB>; 
ele.typeBRef = correspondingTypeB; 
return ele;
})```