Defects in the “process of adopting an annexation ordinance” cannot be challenged outside of a quo warranto proceeding. City of San Antonio v. Summerglen Prop. Owners Ass'n Inc., 185 S.W.3d 74, 83 (Tex.App.-San Antonio 2005, pet. denied). For example, in City of Wilmer v. Laidlaw Waste Sys. (Dallas), Inc., a private party, who challenged a city's annexation conducted under section 43.024, complained that “[o]ne of the persons who signed the annexation petition was not an inhabitant of the area annexed.”