• AdviceUtils
• BootstrapPackagePrefixesHolder
• CallableWrapper
• CallDepth
• CallDepthThreadLocalMap
• ClassHierarchyIterable
• ContextStore
• ContextStore.Factory
• ExecutorInstrumentationUtils
• InClassLoaderMatcher
• InstrumentationContext
• Java8BytecodeBridge
• KeyHolder
• OpenTelemetrySdkAccess
• OpenTelemetrySdkAccess.ForceFlusher
• Pair
• RunnableWrapper
• SafeServiceLoader
• State
• ThreadLocalContext
• UndertowActiveHandlers