private static Gauge convertDoubleGauge(final DoubleGauge doubleGauge) {
        final Gauge.Builder builder = Gauge.newBuilder();
        doubleGauge.getDataPointsList()
                   .stream()
                   .map(OtelMetricsConvertor::convertDoubleDataPoint)
                   .forEach(builder::addDataPoints);
        return builder.build();
    }
Convert IntHistogramDataPoint in OTEL 0.7 to HistogramDataPoint
Notice this method ignore min, max, Exemplar fields in HistogramDataPoint
oap-server/server-receiver-plugin/aws-firehose-receiver/src/main/java/org/apache/skywalking/oap/server/receiver/aws/firehose/OtelMetricsConvertor.java