| Package | Description | 
|---|---|
| com.google.common.collect | This package contains generic collection interfaces and implementations, and
 other utilities for working with collections. | 
| com.google.common.io | This package contains utility methods and classes for working with Java I/O,
 for example input streams, output streams, readers, writers, and files. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | BinaryTreeTraverser<T>A variant of  TreeTraverserfor binary trees, providing additional traversals specific to
 binary trees. | 
| Modifier and Type | Method and Description | 
|---|---|
| static TreeTraverser<File> | Files. fileTreeTraverser()Returns a  TreeTraverserinstance forFiletrees. | 
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