Aggregator (Cytoscape Swing App API (swing-app-api) 3.8.1 API)

```
public interface Aggregator<T>
```
The Aggregator interface acts as a service interface for different methods of aggregating attribute data for the nodes in a CyGroup. Aggregators are used to combine the attribute values of the nodes contained within a Group into a representative attribute value for the Group itself.
Module: group-api
To use this in your app, include the following dependency in your POM:
```
<dependency>
    <groupId>org.cytoscape</groupId>
    <artifactId>group-api</artifactId>
</dependency>
```
Cytoscape Backwards Compatibility (SPI Interface): We expect that this interface will be implemented. Therefore to maintain backwards compatibility this interface will only be modified for major version updates.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`<T> T`	`aggregate(CyTable table, CyGroup group, CyColumn column)`	Aggregate the column for the members of the specified group into the group.
`default Class`	`getSupportedListType()`	Return the base Class of the List, if this is a list type.
`Class`	`getSupportedType()`	Return the Class this aggregator supports
`String`	`toString()`	This gets the name of the handling type supported by this aggregator, suitable for use in a menu.

- Method Detail
  - getSupportedType
```
Class getSupportedType()
```
    Return the Class this aggregator supports
    
    Returns:
    
    the Class supported
  - getSupportedListType
```
default Class getSupportedListType()
```
    Return the base Class of the List, if this is a list type.
    
    Returns:
    
    the Class supported by this List
  - toString
```
String toString()
```
    This gets the name of the handling type supported by this aggregator, suitable for use in a menu.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a name for the handling type
  - aggregate
```
<T> T aggregate(CyTable table,
                CyGroup group,
                CyColumn column)
```
    Aggregate the column for the members of the specified group into the group.
    
    Parameters:
    
    table - the CyTable for this group
    
    group - the group
    
    column - the column we're aggregating
    
    Returns:
    
    the aggregated value