org.springframework.integration.util
Interfaces 
CollectionFilter
LockRegistry
Pool
SimplePool.PoolItemCallback
Classes 
AbstractExpressionEvaluator
AcceptOnceCollectionFilter
AnnotatedMethodFilter
BeanFactoryTypeConverter
ClassUtils
DefaultLockRegistry
ErrorHandlingTaskExecutor
ExpressionUtils
FixedMethodFilter
MessagingMethodInvokerHelper
PassThruLockRegistry
SimplePool
UniqueMethodFilter
UpperBound
UUIDConverter
WhileLockedProcessor