contract ITransferableOwnership {

    /**
     * Transfer ownership to `_newOwner`
     *
     * @param _newOwner The address of the account that will become the new owner 
     */
    function transferOwnership(address _newOwner);
}
function transferOwnership(address _newOwner);

/**
 * Transfer ownership to `_newOwner`
 *
 * @param _newOwner The address of the account that will become the new owner 
 */