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title: Mule (dw::Mule)
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product: DataWeave
version: 2.6
---

# Mule (dw::Mule)

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

This DataWeave module contains functions for interacting with Mule runtime.

## 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/2.6/dw-mule-functions-causedby">causedBy</a></p></td><td><p>This function matches an error by its type, like an error handler does.</p></td></tr><tr><td><p><a href="https://docs.mulesoft.com/dataweave/2.6/dw-mule-functions-lookup">lookup</a></p></td><td><p>This function enables you to execute a flow within a Mule app and retrieve the resulting payload.</p></td></tr><tr><td><p><a href="https://docs.mulesoft.com/dataweave/2.6/dw-mule-functions-p">p</a></p></td><td><p>This function returns a string that identifies the value of one of these input properties: Mule property placeholders, System properties, or Environment variables.</p></td></tr></tbody></table>

## Types

- [Mule Types](https://docs.mulesoft.com/dataweave/2.6/dw-mule-types)