Function useFallbackChat

Returns {
    chatWithFallback: (
        messages: any[],
        options?: {
            chainName?: string | string[];
            temperature?: number;
            maxTokens?: number;
            stream?: boolean;
        },
    ) => Promise<FallbackResult<any>>;
    isLoading: boolean;
    error: Error;
    performanceMetrics: ModelPerformanceMetrics[];
}