relayMoveEvent_(pointerEvent) {
    this.originalPointerMoveEvent_ = pointerEvent;
    const dragging = !!(this.down_ && this.isMoving_(pointerEvent));
    this.dispatchEvent(
      new MapBrowserEvent(
        MapBrowserEventType.POINTERMOVE,
        this.map_,
        pointerEvent,
        dragging,
      ),
    );
  }
Wrap and relay a pointermove event.
@param {PointerEvent} pointerEvent Pointer
event.
@private