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# Entity.ConfigurationCatalog.ConfigurationCombination

A type that associates an entity with a combination of configurations.

```
struct ConfigurationCombination
```

## Topics

### Creating a configuration combination

[`init(entity: Entity, configurationSpecifications: [String : String])`](/documentation/RealityKit/Entity/ConfigurationCatalog/ConfigurationCombination/init(entity:configurationSpecifications:))

Creates a configuration combination from an entity and a configuration dictionary.

### Accessing values

[`let entity: Entity`](/documentation/RealityKit/Entity/ConfigurationCatalog/ConfigurationCombination/entity)

The entity that represents the configuration choices.

[`let configurationSpecifications: [String : String]`](/documentation/RealityKit/Entity/ConfigurationCatalog/ConfigurationCombination/configurationSpecifications)

A dictionary that associates IDs of configuration sets to IDs of configurations.


---

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