| Interface | Description | 
|---|---|
| TaskActionListener | A  TaskActionListeneris notified of the actions that a task performs. | 
| TaskExecutionGraph | A  TaskExecutionGraphis responsible for managing the execution of theTaskinstances which
 are part of the build. | 
| TaskExecutionGraphListener | A  TaskExecutionGraphListeneris notified when theTaskExecutionGraphhas been populated. | 
| TaskExecutionListener | A  TaskExecutionListeneris notified of the execution of the tasks in a build. | 
| Class | Description | 
|---|---|
| TaskExecutionAdapter | A  TaskExecutionListeneradapter class for receiving task execution events. |