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Contract Inheritance

Core Contracts

Home (initializes Common, OwnableUpgradeable)
- MerkleTreeManager
- Common (initializes QueueManager)
  - QueueManager
- OwnableUpgradeable
Replica (initializes Common) -Common (initializes QueueManager) -QueueManager
UpdaterManager
- Ownable
- IUpdaterManager
XAppConnectionManager
- Ownable
MerkleTreeManager

Upgrade

UpgradeBeacon
UpgradeBeaconController
- Ownable
UpgradeBeaconProxy

Governance

GovernanceRouter
- Initializable
- IMessageRecipient

xApps

Token Bridge

BridgeRouter (initializes TokenRegistry and XAppConnectionClient)
- TokenRegistry
  - Initializable
- Router (no initializer)
  - XAppConnectionClient (initializes OwnableUpgradeable)
    - OwnableUpgradeable
BridgeToken (initializes OwnableUpgradeable)
- ERC20
- OwnableUpgradeable
- IBridgeToken
ETHHelper