eption If the prompt format is invalid.
     * @throws \RuntimeException If no suitable model is found.
     */
    public static function convertTextToSpeechResult($prompt, $modelOrConfig = null, ?ProviderRegistry $registry = null): GenerativeAiResult
    {
        self::validateModelOrConfigParameter($modelOrConfig);
        return self::getConfiguredPromptBuilder($prompt, $modelOrConfig, $registry)->convertTextToSpeechResult();
    }
    /**
     * Generates speech using the traditional API approach.
     *
     * @since 0.1.0
     *
     * @param Prompt $prompt The prompt content.
     * @param ModelInterface|ModelConfig|null $modelOrConfig Optional specific model to use,
     *                                                        or model configuration for auto-discovery,
     *                                                        or null for defaults.
     * @param ProviderRegistry|null $registry Optional custom registry. If null, uses default.
     * @return GenerativeAiResult The generation result.
     *
     * @throws \InvalidArgumentException If the prompt format is invalid.
     * @throws \RuntimeException If no suitable model is found.
     */
    public static function generateSpeechResult($prompt, $modelOrConfig = null, ?ProviderRegistry $registry = null): GenerativeAiResult
    {
        self::validateModelOrConfigParameter($modelOrConfig);
        return self::getConfiguredPromptBuilder($prompt, $modelOrConfig, $registry)->generateSpeechResult();
    }
    /**
     * Generates a video using the traditional API approach.
     *
     * @since 1.3.0
     *
     * @param Prompt $prompt The prompt content.
     * @param ModelInterface|ModelConfig|null $modelOrConfig Optional specific model to use,
     *                                                        or model configuration for auto-discovery,
     *                                                        or null for defaults.
     * @param ProviderRegistry|null $registry Optional custom registry. If null, uses default.
     * @return GenerativeAiResult The generation result.
     *
     * @throws \InvalidArgumentException If the prompt format is invalid.
     * @throws \RuntimeException If no suitable model is found.
     */
    public static function generateVideoResult($prompt, $modelOrConfig = null, ?ProviderRegistry $registry = null): GenerativeAiResult
    {
        self::validateModelOrConfigParameter($modelOrConfig);
        return self::getConfiguredPromptBuilder($prompt, $modelOrConfig, $registry)->generateVideoResult();
    }
    /**
     * Creates a new message builder for fluent API usage.
     *
     * This method will be implemented once MessageBuilder is available.
     * MessageBuilder will provide a fluent interface for constructing complex
     * messages with multiple parts, attachments, and metadata.
     *
     * @since 0.1.0
     *
     * @param string|null $text Optional initial message text.
     * @return object MessageBuilder instance (type will be updated when MessageBuilder is available).
     *
     * @throws \RuntimeException When MessageBuilder is not yet available.
     */
    public static function message(?string $text = null)
    {
        throw new RuntimeException('MessageBuilder is not yet available. This method depends on builder infrastructure. ' . 'Use direct generation methods (generateTextResult, generateImageResult, etc.) for now.');
    }
    /**
     * Validates that parameter is ModelInterface, ModelConfig, or null.
     *
     * @param mixed $modelOrConfig The parameter to validate.
     * @return void
     * @throws \InvalidArgumentException If parameter is invalid type.
     */
    private static function validateModelOrConfigParameter($modelOrConfig): void
    {
        if ($modelOrConfig !== null && !$modelOrConfig instanceof ModelInterface && !$modelOrConfig instanceof ModelConfig) {
            throw new InvalidArgumentException('Parameter must be a ModelInterface instance (specific model), ' . 'ModelConfig instance (for auto-discovery), or null (default auto-discovery). ' . sprintf('Received: %s', is_object($modelOrConfig) ? get_class($modelOrConfig) : gettype($modelOrConfig)));
        }
    }
    /**
     * Configures PromptBuilder based on model/config parameter type.
     *
     * @param Prompt $prompt The prompt content.
     * @param ModelInterface|ModelConfig|null $modelOrConfig The model or config parameter.
     * @param ProviderRegistry|null $registry Optional custom registry to use.
     * @return PromptBuilder Configured prompt builder.
     */
    private static function getConfiguredPromptBuilder($prompt, $modelOrConfig, ?ProviderRegistry $registry = null): PromptBuilder
    {
        $builder = self::prompt($prompt, $registry);
        if ($modelOrConfig instanceof ModelInterface) {
            $builder->usingModel($modelOrConfig);
        } elseif ($modelOrConfig instanceof ModelConfig) {
            $builder->usingModelConfig($modelOrConfig);
        }
        // null case: use default model discovery
        return $builder;
    }
}