interface ISetFactory {

    /* ============ External Functions ============ */

    /**
     * Exchange components for Set tokens
     *
     * @param  _set          Address of the Set to issue
     * @param  _quantity     Number of tokens to issue
     */
    function issue(
        address _set,
        uint256 _quantity
    )
        external;

}
function issue(
        address _set,
        uint256 _quantity
    )
        external;
/**
 * Exchange components for Set tokens
 *
 * @param  _set          Address of the Set to issue
 * @param  _quantity     Number of tokens to issue
 */