clustering-index.go
func (index *ClusteringIndex) KNearest(point Point, k int, maxDistance Meters, accept func(p Point) bool) []Point {
	return index.streetLevel.KNearest(point, k, maxDistance, accept)
}
func (index *ClusteringIndex) KNearest(point Point, k int, maxDistance Meters, accept func(p Point) bool) []Point {
	return index.streetLevel.KNearest(point, k, maxDistance, accept)
}
func ( index * ClusteringIndex ) KNearest ( point Point , k int , maxDistance Meters , accept func ( p Point ) bool ) [ ] Point { return index . streetLevel . KNearest ( point , k , maxDistance , accept ) }
// KNearest returns the K-Nearest points near point within maxDistance, that match the accept function.
KNearest returns the K - Nearest points near point within maxDistance that match the accept function .