drawByDrag(x, shiftX) {
    I.scrollPageToTop();
    I.moveMouse(this._stageBBox.x + x, this._stageBBox.y + this._stageBBox.height / 2);
    I.pressMouseDown();
    I.moveMouse(this._stageBBox.x + x + shiftX, this._stageBBox.y + this._stageBBox.height / 2, 3);
    I.pressMouseUp();
  }
Mousedown - mousemove - mouseup drawing a region on the first Channel. Works in conjunction with lookForStage.
@example
await AtTimeSeries.lookForStage();
AtTimeseries.drawByDrag(50, 200);
@param x
@param shiftX