creation_sourcecode: contract OwnedUpgradeabilityStorage {
  
    // Current implementation
    address internal _implementation;
  
    // Owner of the contract
    address private _upgradeabilityOwner;
  
    /**
     * @dev Tells the address of the owner
     * @return the address of the owner
     */
    function upgradeabilityOwner() public view returns (address) {
      return _upgradeabilityOwner;
    }
  
    /**
     * @dev Sets the address of the owner
     */
    function setUpgradeabilityOwner(address newUpgradeabilityOwner) internal {
      _upgradeabilityOwner = newUpgradeabilityOwner;
    }
  
    /**
    * @dev Tells the address of the current implementation
    * @return address of the current implementation
    */
    function implementation() public view returns (address) {
      return _implementation;
    }
  
    /**
    * @dev Tells the proxy type (EIP 897)
    * @return Proxy type, 2 for forwarding proxy
    */
    function proxyType() public pure returns (uint256 proxyTypeId) {
      return 2;
    }
  }
  
  
  
  contract Proxy {
  
    /**
    * @dev Tells the address of the implementation where every call will be delegated.
    * @return address of the implementation to which it will be delegated
    */
    function implementation() public view returns (address);
  
    /**
    * @dev Tells the type of proxy (EIP 897)
    * @return Type of proxy, 2 for upgradeable proxy
    */
    function proxyType() public pure returns (uint256 proxyTypeId);
  
    /**
    * @dev Fallback function allowing to perform a delegatecall to the given implementation.
    * This function will return whatever the implementation call returns
    */
    function () payable public {
      address _impl = implementation();
      require(_impl != address(0));
  
      assembly {
        let ptr := mload(0x40)
        calldatacopy(ptr, 0, calldatasize)
        let result := delegatecall(gas, _impl, ptr, calldatasize, 0, 0)
        let size := returndatasize
        returndatacopy(ptr, 0, size)
  
        switch result
        case 0 { revert(ptr, size) }
        default { return(ptr, size) }
      }
    }
  }
  
  contract OwnedUpgradeabilityProxy is Proxy, OwnedUpgradeabilityStorage {
    /**
    * @dev Event to show ownership has been transferred
    * @param previousOwner representing the address of the previous owner
    * @param newOwner representing the address of the new owner
    */
    event ProxyOwnershipTransferred(address previousOwner, address newOwner);
  
    /**
    * @dev This event will be emitted every time the implementation gets upgraded
    * @param implementation representing the address of the upgraded implementation
    */
    event Upgraded(address indexed implementation);
  
    /**
    * @dev Upgrades the implementation address
    * @param implementation representing the address of the new implementation to be set
    */
    function _upgradeTo(address implementation) internal {
      require(_implementation != implementation);
      _implementation = implementation;
      emit Upgraded(implementation);
    }
  
    /**
    * @dev Throws if called by any account other than the owner.
    */
    modifier onlyProxyOwner() {
      require(msg.sender == proxyOwner());
      _;
    }
  
    /**
     * @dev Tells the address of the proxy owner
     * @return the address of the proxy owner
     */
    function proxyOwner() public view returns (address) {
      return upgradeabilityOwner();
    }
  
    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     * @param newOwner The address to transfer ownership to.
     */
    function transferProxyOwnership(address newOwner) public onlyProxyOwner {
      require(newOwner != address(0));
      emit ProxyOwnershipTransferred(proxyOwner(), newOwner);
      setUpgradeabilityOwner(newOwner);
    }
  
    /**
     * @dev Allows the upgradeability owner to upgrade the current implementation of the proxy.
     * @param implementation representing the address of the new implementation to be set.
     */
    function upgradeTo(address implementation) public onlyProxyOwner {
      _upgradeTo(implementation);
    }
  
    /**
     * @dev Allows the upgradeability owner to upgrade the current implementation of the proxy
     * and delegatecall the new implementation for initialization.
     * @param implementation representing the address of the new implementation to be set.
     * @param data represents the msg.data to bet sent in the low level call. This parameter may include the function
     * signature of the implementation to be called with the needed payload
     */
    function upgradeToAndCall(address implementation, bytes data) payable public onlyProxyOwner {
      upgradeTo(implementation);
      require(address(this).delegatecall(data));
    }
  }
  
  
  contract OwnableDelegateProxy is OwnedUpgradeabilityProxy {
  
      constructor(address owner, address initialImplementation, bytes calldata)
          public
      {
          setUpgradeabilityOwner(owner);
          _upgradeTo(initialImplementation);
          require(initialImplementation.delegatecall(calldata));
      }
  
  }