com.liferay.portal.kernel.messaging
Interfaces 
Destination
DestinationEventListener
DestinationNames
MessageBus
MessageListener
Classes 
ArrayDispatcherDestination
BaseDestination
BaseMessageListener
BridgingMessageListener
DefaultMessageBus
DestinationStatistics
DummyArrayDispatcherDestination
DummyIteratorDispatcherDestination
DummyMessageListener
GlobalDestinationEventListener
InvokerMessageListener
IteratorDispatcherDestination
Message
MessageBusUtil
MessageStatus
ParallelDestination
SerialDestination
TempDestination
Exceptions 
MessageBusException