| Package | Description | 
|---|---|
| com.hazelcast.client.proxy | This package contains client side proxy implementations of the different Hazelcast data structures
 and operation types | 
| com.hazelcast.core | Provides core API interfaces/classes. | 
| com.hazelcast.map.impl.proxy | Contains map proxy implementation and support classes. | 
| com.hazelcast.mapreduce.aggregation | This package contains the aggregation API and the convenience helper classes
 to retrieve predefined aggregation implementations. | 
| com.hazelcast.mapreduce.aggregation.impl | This package contains a set of predefined aggregation implementations | 
| com.hazelcast.multimap.impl | Contains classes for Hazelcast MultiMap module. | 
| Class and Description | 
|---|
| Aggregation The Aggregation interface combines multiple map-reduce operations steps to a
 single operation definition. | 
| Supplier | 
| Class and Description | 
|---|
| Aggregation The Aggregation interface combines multiple map-reduce operations steps to a
 single operation definition. | 
| Supplier | 
| Class and Description | 
|---|
| Aggregation The Aggregation interface combines multiple map-reduce operations steps to a
 single operation definition. | 
| Supplier | 
| Class and Description | 
|---|
| Aggregation The Aggregation interface combines multiple map-reduce operations steps to a
 single operation definition. | 
| PropertyExtractor The PropertyExtractor interface is used in suppliers to retrieve values from
 input value types and extract or transform them to some other type to be used
 in aggregations. | 
| Supplier | 
| Class and Description | 
|---|
| PropertyExtractor The PropertyExtractor interface is used in suppliers to retrieve values from
 input value types and extract or transform them to some other type to be used
 in aggregations. | 
| Supplier | 
| Class and Description | 
|---|
| Aggregation The Aggregation interface combines multiple map-reduce operations steps to a
 single operation definition. | 
| Supplier | 
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