In the discretion of the authority, any issue of revenue bonds may be secured by a trust indenture by and between the authority and a corporate trustee, which may be any trust company or bank having the powers of a trust company within or without the state. Such trust indenture may pledge or assign rents, revenues, and earnings to be received by the authority. Either the resolution providing for the issuance of revenue bonds or the trust indenture itself may contain such provisions for perfecting and enforcing the rights and remedies of the bondholders as may be reasonable and proper and not in violation of law, including covenants setting forth the duties of the authority in relation to the acquisition of property, the construction of the project, the maintenance, operation, repair, and insurance of the project, and the custody, safeguarding, and application of all moneys and revenues and may also provide that any project shall be constructed and paid for under the supervision and approval of consulting engineers or architects employed or designated by the authority and satisfactory to the original purchasers of the bonds issued therefor. Such indenture may set forth the rights and remedies of the bondholders and of the trustee and may restrict the individual right of action of bondholders as is customary in trust indentures securing bonds and debentures of corporations. In addition to the foregoing, such trust indenture may contain such other provisions as the authority may deem reasonable and proper for the security of the bondholders.