private final List<HashTagListGraphData> groupHashTagListGraphData(final List<HashTagListGraphData> graphDatas){
final List<HashTagListGraphData> newList = new ArrayList<HashTagListGraphData>();
for (HashTagListGraphData hashTagListGraphData : graphDatas) {
int positionCurrentElement = newList.indexOf(hashTagListGraphData);
if (positionCurrentElement != -1) {
final HashTagListGraphData internalElement = newList.get(positionCurrentElement);
internalElement.setValue(internalElement.getValue() + hashTagListGraphData.getValue());
} else {
newList.add(hashTagListGraphData);
}
}
return newList;