clickAt(x, y) {
    y = y !== undefined ? y : this._stageBbox.height / 2;
    I.scrollPageToTop();
    I.clickAt(this._stageBbox.x + x, this._stageBbox.y + y);
    I.waitTicks(3); // We gotta  wait here because clicks on the canvas are not processed immediately
  }
Click on the Audio waveform at the given x coordinate, and optional y coordinate.
@example
await AtAudioView.lookForStage();
AtAudioView.clickAt(50);
@param {number} x
@param {number} [y=undefined] - if not provided, will click at the center of the waveform