@interface PLTimeSpanClustering : PLDataClustering @property (nonatomic) unsigned long long averageNumberOfObjects; @property (nonatomic) double minimumSpan; - (id)init; - (id)performWithDataset:(id)a0 progressBlock:(id /* block */)a1; - (unsigned long long)_findNearestIndexMatchingTimeSpan:(unsigned long long)a0 inDataset:(id)a1; @end