@Override
    protected HistogramSample newSample(long timeMs) {
        return new HistogramSample(binScheme, timeMs);
    }
Return the computed frequency describing the number of occurrences of the values in the bucket for the given
center point, relative to the total number of occurrences in the samples.

@param config      the metric configuration
@param now         the current time in milliseconds
@param centerValue the value corresponding to the center point of the bucket
@return the frequency of the values in the bucket relative to the total number of samples
clients/src/main/java/org/apache/kafka/common/metrics/stats/Frequencies.java