The language-defined generic package Containers.Indefinite_Hashed_Maps
provides a map with the same operations as the package Containers.Hashed_Maps
(see
A.18.5), with the difference that the
generic formal types Key_Type and Element_Type are indefinite.
The declaration of
the generic library package Containers.Indefinite_Hashed_Maps
has the same contents as Containers.Hashed_Maps except: