Here are the classes, structs, unions and interfaces with brief descriptions:

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Pothos
serialization
System
NumaInfo
HostInfo
Logger
Util
EvalInterface
OrderedQueue
SpinLock
UID
RingDeque
RefHolder
CompilerArgs
Compiler
CallRegistry
Callable
CallInterface
TestingBase
Block
DType
BufferChunk
ThreadPoolArgs
ThreadPool
BlockRegistry
Packet
PortInfo	Information about an IO port
Connectable
SharedBuffer
BufferAccumulator
Label
LabelIteratorRange
ManagedBuffer
InputPort
Topology
OutputPort
WorkInfo
BufferManagerArgs
BufferManager
PluginLoader
PluginRegistryInfoDump
PluginRegistry
PluginPath
Plugin
PluginModule
RemoteHandler
RemoteClient
RemoteServer
NullObject
Object
ObjectM
Exception
LogicException
AssertionViolationException
NullPointerException
NullValueException
BugcheckException
InvalidArgumentException
NotImplementedException
RangeException
IllegalStateException
InvalidAccessException
SignalException
UnhandledException
RuntimeException
NotFoundException
ExistsException
TimeoutException
SystemException
RegularExpressionException
LibraryLoadException
LibraryAlreadyLoadedException
NoThreadAvailableException
PropertyNotSupportedException
PoolOverflowException
NoPermissionException
OutOfMemoryException
DataException
DataFormatException
SyntaxException
CircularReferenceException
PathSyntaxException
IOException
ProtocolException
FileException
FileExistsException
FileNotFoundException
PathNotFoundException
FileReadOnlyException
FileAccessDeniedException
CreateFileException
OpenFileException
WriteFileException
ReadFileException
UnknownURISchemeException
ApplicationException
BadCastException
ManagedClass
ProxyEnvironment
ProxyHandle
Proxy