Every object is as close to documentation as possible. Also reference provided in doc blocks where possible. Like this

Every aggregation object implements \Spameri\ElasticQuery\Aggregation\LeafAggregationInterface and is capable of converting to array.

AggregationCollection is also LeafAggregationInterface, so you can nest as you need.

• Class \Spameri\ElasticQuery\Aggregation\Term
• Documentation
• Implementation

• Class \Spameri\ElasticQuery\Aggregation\Histogram
• Documentation
• Implementation

• Class \Spameri\ElasticQuery\Aggregation\Range
• Documentation
• Implementation

• Class \Spameri\ElasticQuery\Aggregation\AggregationCollection
• Implementation
• Top level aggregations.

• Class \Spameri\ElasticQuery\Aggregation\LeafAggregationCollection
• Implementation
• Nested aggregations collection.