# TransientAppEntityDefinition A definition you use to dynamically create transient app entities for testing. ``` struct TransientAppEntityDefinition ``` ## Overview To create a transient app entity instance for testing, load the definition for your transient app entity using [`IntentDefinitions`](/documentation/AppIntentsTesting/IntentDefinitions) and its [`transientEntities`](/documentation/AppIntentsTesting/IntentDefinitions/transientEntities) property, then create an entity instance as shown in the following example: ```swift let definitions = IntentDefinitions( bundleIdentifier: "com.apple.example" ) let sessionEntity = definitions.transientEntities[ "UserSessionEntity" ] let entity = sessionEntity.makeEntity( sessionId: "temp-session-123", startTime: Date() ) ``` ## Topics ### Creating a transient entity instance [`var makeEntity: IntentValuePropertiesCallable`](/documentation/AppIntentsTesting/TransientAppEntityDefinition/makeEntity) Creates a populated instance of this transient entity. ### Identifying the entity [`let bundleIdentifier: String`](/documentation/AppIntentsTesting/TransientAppEntityDefinition/bundleIdentifier) The bundle identifier of the app that contains this entity. [`let typeIdentifier: String`](/documentation/AppIntentsTesting/TransientAppEntityDefinition/typeIdentifier) The entity type’s identifier. ### Instance Methods [`func resolved(from: T) async throws -> AnyTransientAppEntity`](/documentation/AppIntentsTesting/TransientAppEntityDefinition/resolved(from:)-1lap2) Resolves a transient entity from a transferable intent value type through the entity type’s `Transferable` conformance. [`func resolved(from: T) async throws -> AnyTransientAppEntity`](/documentation/AppIntentsTesting/TransientAppEntityDefinition/resolved(from:)-3jjpx) Resolves a transient entity from a system intent value type through the entity type’s `Transferable` conformance. [`func resolved(from: IntentFile) async throws -> AnyTransientAppEntity`](/documentation/AppIntentsTesting/TransientAppEntityDefinition/resolved(from:)-6xsjl) Resolves a transient entity from an exported `IntentFile` through the entity type’s `Transferable` conformance. ### Default Implementations [AppIntentTypeDefinition Implementations](/documentation/AppIntentsTesting/TransientAppEntityDefinition/AppIntentTypeDefinition-Implementations) ## Relationships ### Conforms To [`AppIntentTypeDefinition`](/documentation/AppIntentsTesting/AppIntentTypeDefinition) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Escapable`](/documentation/Swift/Escapable) [`Sendable`](/documentation/Swift/Sendable) [`Copyable`](/documentation/Swift/Copyable) [`Equatable`](/documentation/Swift/Equatable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)