---
title: source
framework: coremediaio
role: symbol
role_heading: Instance Property
path: coremediaio/cmioextensionprovider/source
---

# source

The source for the provider.

## Declaration

```swift
weak var source: (any CMIOExtensionProviderSource)? { get }
```

## See Also

### Inspecting a Provider

- [clientQueue](coremediaio/cmioextensionprovider/clientqueue.md)