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

---@return 4 expansion 
---@return  0 
---@return  1 
---@return  2 
---@return  3 
---@return  4 
---Returns the expansion level of the game. Returns the expansion level active on the current account. Differs from GetAccountExpansionLevel() as that function returns the highest purchased expansion level, while GetExpansionLevel() returns the currently active one.
function GetExpansionLevel() end