helix.graph.util
Classes 
AdaptedIterator
BitSetIterator
CommandLine
ConcurrentService
EmptyIterable
EmptyIterator
GraphDebugger
IPermutation
IPermutationIterator
LogUtil
MemoryBench
MemoryWatcher
Reporter
SimpleLogFormatter
StopWatch
TestBitset
TestGraphDebugger
TestIPermutation
Exceptions 
CommandLineException