private static Histogram convertIntHistogram(final IntHistogram intHistogram) {
        final Histogram.Builder builder = Histogram.newBuilder();
        builder.setAggregationTemporality(convertAggregationTemporality(intHistogram.getAggregationTemporality()));
        builder.setAggregationTemporalityValue(intHistogram.getAggregationTemporalityValue());
        intHistogram.getDataPointsList()
                    .stream()
                    .map(OtelMetricsConvertor::convertIntHistogramDataPoint)
                    .forEach(builder::addDataPoints);
        return builder.build();
    }
Convert DoubleDataPoint in OTEL 0.7 to NumberDataPoint
Notice this method ignore Exemplar field in HistogramDataPoint
oap-server/server-receiver-plugin/aws-firehose-receiver/src/main/java/org/apache/skywalking/oap/server/receiver/aws/firehose/OtelMetricsConvertor.java