---
title: containerID
framework: fskit
role: symbol
role_heading: Instance Property
path: fskit/fsproberesult/containerid
---

# containerID

The container identifier, as found during the probe operation.

## Declaration

```swift
var containerID: FSContainerIdentifier? { get }
```

## Discussion

Discussion This value is non-nil unless the result is FSMatchResult.notRecognized. For formats that lack a durable UUID on which to base a container identifier — which is only legal for a FSUnaryFileSystem — this value may be a random UUID.

## See Also

### Working with result properties

- [name](fskit/fsproberesult/name.md)
- [result](fskit/fsproberesult/result.md)
- [FSMatchResult](fskit/fsmatchresult.md)