Md. Code, Local Government § 1–1431

(a) A bondholder, a holder of any coupons attached to bonds, or a trustee

under a trust agreement securing the bonds may sue:

(1) to protect and enforce rights under State law or a trust

agreement; and

(2) to enforce and compel the performance of duties by an authority

or its officer, employee, or agent that this subtitle or a trust agreement requires,

including imposing rates, rents, fees, and charges that the trust agreement requires

to be imposed.

(b) The rights under this section are subject to any trust agreement.