interface Module {

    /**
     * @dev Inits a module for a wallet by e.g. setting some wallet specific parameters in storage.
     * @param _wallet The wallet.
     */
    function init(BaseWallet _wallet) external;

    /**
     * @dev Adds a module to a wallet.
     * @param _wallet The target wallet.
     * @param _module The modules to authorise.
     */
    function addModule(BaseWallet _wallet, Module _module) external;

    /**
    * @dev Utility method to recover any ERC20 token that was sent to the
    * module by mistake.
    * @param _token The token to recover.
    */
    function recoverToken(address _token) external;
}
/**
 * @title Module
 * @dev Interface for a module.
 * A module MUST implement the addModule() method to ensure that a wallet with at least one module
 * can never end up in a "frozen" state.
 * @author Julien Niset - <julien@argent.xyz>
 */
function addModule(BaseWallet _wallet, Module _module) external;

/**
 * @dev Adds a module to a wallet.
 * @param _wallet The target wallet.
 * @param _module The modules to authorise.
 */