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title: Tree (dw::util::Tree)
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# Tree (dw::util::Tree)

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

This utility module provides functions that enable you to handle values as though they are tree data
structures.

The module is included with Mule runtime. To use it, you must import it into your DataWeave code,
for example, by adding the line `import * from dw::util::Tree` to the header of your script.

_Introduced in DataWeave 2.2.2. Supported by Mule 4.2.2 and later._

## Functions

<table><colgroup><col> <col></colgroup><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr><td><p><a href="https://docs.mulesoft.com/dataweave/2.3/dw-tree-functions-asexpressionstring">asExpressionString</a></p></td><td><p>Transforms a path to a string representation.</p></td></tr><tr><td><p><a href="https://docs.mulesoft.com/dataweave/2.3/dw-tree-functions-mapleafvalues">mapLeafValues</a></p></td><td><p>Maps the terminal (leaf) nodes in the tree.</p></td></tr><tr><td><p><a href="https://docs.mulesoft.com/dataweave/2.3/dw-tree-functions-nodeexists">nodeExists</a></p></td><td><p>Returns <code>true</code> if any node in the tree validates against the specified criteria.</p></td></tr></tbody></table>

## Variables

- [Tree Variables](https://docs.mulesoft.com/dataweave/2.3/dw-tree-variables)

## Types

- [Tree Types](https://docs.mulesoft.com/dataweave/2.3/dw-tree-types)