The two callers of this method are PathNavigationRegion and RenderRegionCache.isAllEmpty. PathNavigationRegion doesn't seem to do anything with the result, so in vanilla it's seemingly only used as a rendering optimization. It's possible that mods could use it in unexpected ways though, so I'm not sure whether unloaded sections should count as empty or not?
The two callers of this method are
PathNavigationRegionandRenderRegionCache.isAllEmpty.PathNavigationRegiondoesn't seem to do anything with the result, so in vanilla it's seemingly only used as a rendering optimization. It's possible that mods could use it in unexpected ways though, so I'm not sure whether unloaded sections should count as empty or not?