public Map<String, Set<DataPoint>> getSeries() {
        return new HashMap<String, Set<DataPoint>>(store);
    }
public Map < String , Set < DataPoint > > getSeries ( ) { return new HashMap < String , Set < DataPoint > > ( store ) ; }
Gets a mapping from series to an unordered set of DataPoints.

@return Mapping from a series name to unordered set of data.