The authority may secure bonds by a trust agreement, trust indenture, indenture of mortgage or deed of trust by and between the authority and one or more corporate trustees. A bond resolution providing for the issuance of bonds so secured shall mortgage, pledge, assign or grant security interests in some or all of the revenues to be received by, and property of, the authority and may contain those provisions for protecting and enforcing the rights and remedies of the bondholders that are reasonable and proper and not in violation of law. A bond resolution may contain other provisions determined by the board to be reasonable and proper for the security of the bondholders.
Wis. Stat. § 233.21