org.apache.jmeter.control
Interfaces 
Controller
ReplaceableController
Classes 
ForeachController
GenericController
GenericController.Test
IfController
IfController.Test
InterleaveControl
InterleaveControl.Test
LoopController
LoopController.Test
ModuleController
OnceOnlyController
OnceOnlyController.Test
RandomController
RandomOrderController
RandomOrderController.Test
RunTime
ThroughputController
ThroughputController.Test
TransactionController
WhileController
Exceptions 
NextIsNullException
NoEntryException