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

---@param index number 
---@return number professionID 
---@return boolean or nil isCollapsed 
---@return string iconTexture 
---@return string headerName 
---@return number numOnline 
---@return number numVisible 
---@return number numPlayers 
---@return string playerName 
---@return string playerNameWithRealm 
---@return string class 
---@return 1 or nil online 
---@return string zone 
---@return number skill 
---@return string classFileName 
---@return boolean isMobile 
---Returns information about the specified guild profession entry.. Returns information about the specified guild profession entry (crafter or header).
function GetGuildTradeSkillInfo(index) end