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// File: contracts/zeppelin/Proxy.sol
pragma solidity ^0.4.24;
/**
 * @title Proxy
 * @dev Implements delegation of calls to other contracts, with proper
 * forwarding of return values and bubbling of failures.
 * It defines a fallback function that delegates all calls to the address
 * returned by the abstract _implementation() internal function.
 */
contract Proxy {
    /**
     * @dev Fallback function.
     * Implemented entirely in `_fallback`.
     */
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// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControlDefaultAdminRules.sol)
pragma solidity ^0.8.0;
import "./AccessControlUpgradeable.sol";
import "./IAccessControlDefaultAdminRulesUpgradeable.sol";
import "../utils/math/SafeCastUpgradeable.sol";
import "../interfaces/IERC5313Upgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
 * @dev Extension of {AccessControl} that allows specifying special rules to manage
 * the `DEFAULT_ADMIN_ROLE` holder, which is a sensitive role with special permissions
 * over other roles that may potentially have privileged rights in the system.
 *
 * If a specific role doesn't have an admin role assigned, the holder of the
 * `DEFAULT_ADMIN_ROLE` will have the ability to grant it and revoke it.
 *
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