Method fetchMore

src/chart/session.js:412–414

* Fetch x additional previous periods/candles values * @param {number} number Number of additional periods/candles you want to fetch

(number = 1)

   * @param {number} number Number of additional periods/candles you want to fetch
   */
  fetchMore(number = 1) {
    this.#client.send('request_more_data', [this.#chartSessionID, '$prices', number]);
  }

  /**
   * Fetch x additional previous periods/candles values