Unused function

[YukiAttano]

The class MarkerClusterLayer has a method _buildMobileTransformStack which calls the following:

 _clusterManager.recursivelyFromTopClusterLevel(
        _currentZoom, widget.options.disableClusteringAtZoom, recursionBounds,
        (MarkerOrClusterNode layer) {
      // This is the performance critical hot path recursed on every map event!

      // Cull markers/clusters that are not on screen.
      if (!widget.mapCamera.pixelBounds.overlaps(
        layer.pixelBounds(widget.mapCamera),
      )) {
        return;
      }

      if (layer is MarkerNode) {
        _addMarkerLayer(layer, layers);
      } else if (layer is MarkerClusterNode) {
        _addMarkerClusterLayer(layer, layers, spiderfyLayers);
      } else {
        throw 'Unexpected layer type: ${layer.runtimeType}';
      }
    });

From my understanding, the call to layer.pixelBounds(widget.mapCamera) has no side effects and returns a Rect which is never used.
Therefor, this method call should be removable.