async _call(input, ...args) {
        for (const item of [this.image_processor, this.feature_extractor, this.tokenizer]) {
            if (item) {
                return item(input, ...args);
            }
        }
        throw new Error('No image processor, feature extractor, or tokenizer found.');
    }
Calls the feature_extractor function with the given input.
@param {any} input The input to extract features from.
@param {...any} args Additional arguments.
@returns {Promise<any>} A Promise that resolves with the extracted features.