Tex. Spec. Dist. Code § 8511.0703
(a) For the purpose of carrying out any power conferred by this chapter, including preparation of the master plan and payment of engineering and related expenses, the authority may issue bonds in three general classes:
(2) bonds secured by a pledge of all or part of the revenue accruing to the authority from any source other than ad valorem taxes, including the revenue received from:
(3) bonds secured by a combination pledge of:
Added by Acts 2021, 87th Leg., R.S., Ch. 914 (H.B. 3530), Sec. 1.03, eff. April 1, 2023.