---
title: USDPrim.Specifier
framework: usdkit
role: symbol
role_heading: Enumeration
path: usdkit/usdprim/specifier-swift.enum
---

# USDPrim.Specifier

How a prim definition behaves in composition.

## Declaration

```swift
enum Specifier
```

## Topics

### Enumeration Cases

- [USDPrim.Specifier.class](usdkit/usdprim/specifier-swift.enum/class.md)
- [USDPrim.Specifier.def](usdkit/usdprim/specifier-swift.enum/def.md)
- [USDPrim.Specifier.over](usdkit/usdprim/specifier-swift.enum/over.md)

## Relationships

### Conforms To

- [Copyable](swift/copyable.md)
- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [USDValueProtocol](usdkit/usdvalueprotocol.md)

## See Also

### Identifying the prim

- [path](usdkit/usdprim/path.md)
- [primPath](usdkit/usdprim/primpath.md)
- [isValid](usdkit/usdprim/isvalid.md)
- [specifier](usdkit/usdprim/specifier-swift.property.md)
- [stage](usdkit/usdprim/stage.md)
- [parent](usdkit/usdprim/parent.md)
- [description](usdkit/usdprim/description.md)