---
title: CMIOExtensionMachServiceNameKey
framework: coremediaio
role: symbol
role_heading: Global Variable
path: coremediaio/cmioextensionmachservicenamekey
---

# CMIOExtensionMachServiceNameKey

A key that specifies the mach service name.

## Declaration

```swift
let CMIOExtensionMachServiceNameKey: String
```

## See Also

### Properties

- [CMIOExtensionProperty](coremediaio/cmioextensionproperty.md)
- [CMIOExtensionPropertyState](coremediaio/cmioextensionpropertystate.md)
- [CMIOExtensionPropertyAttributes](coremediaio/cmioextensionpropertyattributes.md)
- [CMIOExtensionInfoDictionaryKey](coremediaio/cmioextensioninfodictionarykey.md)