No court may appoint an elected county, district or state official to represent a person accused of crime, unless the official has notified the court of his availability for appointment. If an official has notified the court of his availability and is appointed as counsel, he may decline the appointment if he determines that it is in the best interest of his office to do so. Nothing in this Code shall modify any statutory provision for legislative continuance.
Tex. Code Crim. Proc. § 26.06