@Override
                public AcceptableValue<BucketedValues> createNew() {
                    throw new UnexpectedException("createNew should not be called");
                }
Histogram includes data range buckets and the amount matched/grouped in the buckets. This is for original histogram
graph visualization
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/meter/function/HistogramFunction.java