text: 		static void ImDrawListAddRectWithVerticalGradient(ImDrawList *dl, const ImVec2 &a, const ImVec2 &b, const ImU32 &fillColor, float fillColorGradientDeltaIn0_05, const ImU32 &strokeColor, float rounding = 0.0f, int rounding_corners = 0x0F, float strokeThickness = 1.0f, bool antiAliased = true)
  