Sum constructor
      
      Sum({ 
    
    
- Iterable<NumberDataPoint> ? dataPoints,
- AggregationTemporality? aggregationTemporality,
- bool? isMonotonic,
Implementation
factory Sum({
  $core.Iterable<NumberDataPoint>? dataPoints,
  AggregationTemporality? aggregationTemporality,
  $core.bool? isMonotonic,
}) {
  final $result = create();
  if (dataPoints != null) {
    $result.dataPoints.addAll(dataPoints);
  }
  if (aggregationTemporality != null) {
    $result.aggregationTemporality = aggregationTemporality;
  }
  if (isMonotonic != null) {
    $result.isMonotonic = isMonotonic;
  }
  return $result;
}