Elasticsearch Aggregations
Syntax
- "aggregations" : { -"<aggregation_name>" : { -"<aggregation_type>" : { -<aggregation_body> -} -[,"meta" : { [<meta_data_body>] } ]? -[,"aggregations" : { [<sub_aggregation>]+ } ]? -} -[,"<aggregation_name_2>" : { ... } ]* -}
