| Class | Description | 
|---|---|
| AbstractGraphIterator | An abstract implementation of GraphIterator. | 
| BasicGraphTraversal | A basic implementation of GraphTraversal. | 
| CountingWalker | An implementation of GraphWalker that counts the number of components visited. | 
| DummyGraphWalker | A simple implementation of GraphWalker that does nothing but signal a graph traversal to
 continue. | 
| SimpleGraphWalker | A simple implementation of GraphWalker that decorates a GraphVisitor. | 
| SourceGraphIterator | A GraphIterator that starts iteration from a specefied point. | 
| StagedGraphTraversal | TODO: DOCUMENT ME! | 
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