org.mule.umo
Interfaces 
UMOAgent
UMOComponent
UMODescriptor
UMOEncryptionStrategy
UMOEvent
UMOEventContext
UMOExceptionStrategy
UMOFilter
UMOImmutableDescriptor
UMOInterceptor
UMOManager
UMOMessage
UMOServerEventListener
UMOSession
UMOTransaction
UMOTransactionConfig
UMOTransactionFactory
UMOTransactionManagerFactory
Classes 
FutureMessageResult
Invocation
UMOServerEvent
Exceptions 
ComponentException
MessageException
UMOException
UMOTransactionException