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It is a parameter and address discovery module with its own granular access-control logic and setters that allow the authorized actors to change critical protocol-wide parameters.
The rationale of the access-control logic is to have a role per each setter and an admin role to be delegated to a DAO (not part of the core protocol itself).
It is the ‘source of truth’ of the protocol as all other protocol’s contracts are in a pull-based consumer relation with it - with the partial exception of the module RegistryManager which provides to the core contracts a function to allow an authorized party whose role is managed in the current Registry to point to a new Registry
The main business logic restrictions are the restrictions set by its own access-control logic: with the exception of the admin, no role should be authorized to call more than a single. See “ACL” section in the documentation.