The @firebase/app!FirebaseApp this AI instance is associated with.
OptionalappOptionalauthA Backend instance that specifies the configuration for the target backend, either the Gemini Developer API (using GoogleAIBackend) or the Agent Platform Gemini API (using AgentPlatformBackend).
OptionaloptionsOptions applied to this AI instance.
An instance of the Firebase AI SDK.
Do not create this instance directly. Instead, use getAI().