AggregationResult constructor
      
      AggregationResult({ 
    
    
- AggregationResultCount? count,
- String? field,
- AggregationResultFrequency? frequency,
- AggregationResultHistogram? histogram,
- AggregationResultSum? sum,
Implementation
AggregationResult({
  this.count,
  this.field,
  this.frequency,
  this.histogram,
  this.sum,
});