ScreenshotAtIndex
fScreenshotInfos.push_back(value->ScreenshotAtIndex(i));
const ScreenshotInfoRef ScreenshotAtIndex(int32 index) const;
ScreenshotInfoRef screenshot = screenshotInfo->ScreenshotAtIndex(0);
info = screenshotInfo->ScreenshotAtIndex(index);
const ScreenshotInfoRef& screenshot = screenshotInfo->ScreenshotAtIndex(i);