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  "source": "pragma solidity ^0.4.24;\n\nimport \"../Strategy.sol\";\nimport \"../../sale/Sale.sol\";\n\ncontract SaleStrategy is Strategy {\n    /**\n     * @notice this.owner.selector ^ this.renounceOwnership.selector ^ this.transferOwnership.selector\n        ^ this.template.selector ^ this.activate.selector ^ this.deactivate.selector\n        ^ this.started.selector ^ this.successful.selector ^ this.finished.selector\n     */\n    bytes4 public constant InterfaceId_SaleStrategy = 0x04c8123d;\n\n    Sale public sale;\n\n    constructor(address _owner, Sale _sale) public Strategy(_owner) {\n        sale = _sale;\n\n        _registerInterface(InterfaceId_SaleStrategy);\n    }\n\n    modifier whenSaleActivated {\n        require(sale.activated());\n        _;\n    }\n\n    modifier whenSaleNotActivated {\n        require(!sale.activated());\n        _;\n    }\n\n    function activate() whenSaleNotActivated public returns (bool) {\n        return super.activate();\n    }\n\n    function deactivate() onlyOwner whenSaleNotActivated public returns (bool) {\n        activated = false;\n        return true;\n    }\n\n    function started() public view returns (bool);\n\n    function successful() public view returns (bool);\n\n    function finished() public view returns (bool);\n}\n",
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