`-[SBFolderView layoutIconLists:(id)lists animationType:(int)type forceRelayout:(BOOL)force]`
This method iterates through SBIconListViews within the SBFolderView and calls `layoutIconsIfNeeded:animationType:options:` on each instance.
If `forceRelayout` is True, then `setIconsNeedLayout` will be called on the list beforehand, forcing it to re-layout regardless of the existing state.