---@diagnostic disable: missing-return, lowercase-global
---@meta

---@param index number
---Collapses a given faction header or sub-header in the Reputation UI. Faction headers include both major groups (Classic, Burning Crusade, Wrath of the Lich King, Inactive, etc.) and the sub-groups within them (Alliance Forces, Steamwheedle Cartel, Horde Expedition, Shattrath City, etc.).
function CollapseFactionHeader(index) end