question: protected double kNNDistance ( ) { double knnDist = 0. ; for ( int i = 0 ; i < getNumEntries ( ) ; i ++ ) { MkMaxEntry entry = getEntry ( i ) ; knnDist = Math . max ( knnDist , entry . getKnnDistance ( ) ) ; } return knnDist ; }
target:  Determines and returns the k-nearest neighbor distance of this node as the maximum of the k-nearest neighbor distances of all entries.