code: func (geoIndex *geoIndex) GetEntryAt(point Point) interface{} {
  	square := cellOf(point, geoIndex.resolution)
  
  	entries, ok := geoIndex.index[square]
  	if !ok {
  		return geoIndex.newEntry()
  	}
  
  	return entries
  }
docs: // GetEntryAt gets an entry from the geoindex, if missing returns an empty entry without changing the index.