An issuer may bring an action under this chapter:
(1) concurrently with or after the use of another procedure to obtain a declaratory judgment, approval, or validation;
(2) before or after the public securities are authorized, issued, or delivered;
(3) before or after the attorney general approves the public securities; and
(4) regardless of whether another proceeding is pending in any court relating to a matter to be adjudicated in the suit.