(a) A director of a district is subject to the provisions of Chapters 171 and 176, Local Government Code, relating to the regulation of conflicts of officers of local governments.
(b) If a director is required to file an affidavit under Section 171.004(a), Local Government Code, the director may not:
(1) attend a closed meeting related to the matter for which the director is required to file the affidavit; and
(2) vote on a matter for which the director is required to file the affidavit unless a majority of the directors are also required to file an affidavit related to a similar interest on the same official action.