API GameTooltip ClearLines

Clear the lines of a tooltip, both left and right.
 GameTooltip:ClearLines();
==Details==
*If this method is called when the GameTooltip is visible it will clear all the text but won't hide it
*The text isn't actually cleared, merely hidden. After a call to this method, the text can still be retrieved using FontString:GetText() on the GameTooltip's FontString children.
==See also==
*GameTooltip:AddDoubleLine()
*GameTooltip:AddLine()
*GameTooltip:SetText()