FRAGMOS * whole Model benefit + required for Struct * - Basket refactoring

[JBZ-Fragmos]

BACKGROUND - Problem Statement

• n°1 content of Basket is restricted to Product type, because basketConstituent is of type Product

• n°2 some product requires to specify how the basket components shall be aggregated for payout calculation purposes, i.e. vanilla case by default according to usual documentation may be to average the components, yet some bespoke payout terms would require to specify other types e.g. 'nth' sorting, worts of, best of, exact type of averaging e.g. arithmetic or geometric, etc.

PROPOSAL to fix Pb n°1 - in accordance with refactoring already described in linked Issue #2106

• instead of basketConstituent being of type Product, shall have it of type Observable

• same with "name" visible instead of "type" of object :

PROPOSAL to fix Pb n°2 - in accordance with refactoring already described in linked Issue #2498

• we also need to add new attribute to specify the aggregation method of basket components

[JBZ-Fragmos]

any item related to this Issue is either closed or re-open under this one :
#2941