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While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with GSN meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\ncontract ContextUpgradeSafe is Initializable {\n // Empty internal constructor, to prevent people from mistakenly deploying\n // an instance of this contract, which should be used via inheritance.\n\n function __Context_init() internal initializer {\n __Context_init_unchained();\n }\n\n function __Context_init_unchained() internal initializer {\n\n\n }\n\n\n function _msgSender() internal view virtual returns (address payable) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes memory) {\n this; // silence state mutability warning without generating bytecode - see 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