// Copyright 2012-present Oliver Eilhard. All rights reserved.
// Use of this source code is governed by a MIT-license.
// See http://olivere.mit-license.org/license.txt for details.

package es

// Aggregations can be seen as a unit-of-work that build
// analytic information over a set of documents. It is
// (in many senses) the follow-up of facets in Elasticsearch.
// For more details about aggregations, visit:
// https://www.elastic.co/guide/en/elasticsearch/reference/7.0/search-aggregations.html
type Aggregation interface {
	// Source returns a JSON-serializable aggregation that is a fragment
	// of the request sent to Elasticsearch.
	Source() (interface{}, error)
}