Method init

sentiment/index.js:39–44

* Initializes the Sentiment demo.

(urls)

   * Initializes the Sentiment demo.
   */
  async init(urls) {
    this.urls = urls;
    this.model = await loader.loadHostedPretrainedModel(urls.model);
    await this.loadMetadata();
    return this;
  }

  async loadMetadata() {
    const sentimentMetadata =