Default Layer Expansion in Layer List of WAB DE 2.11

[TimHayes]

Is it possible (and how can it be done) to show the 1st Layer in the Layer List Widget as default expanded, and all sublayers as default compressed?

I have gone here (Layer List—Web AppBuilder for ArcGIS (Developer Edition) | ArcGIS for Developers) to look for a configurable attribute that would do something like this, but seems its not there.

See the images here for what I mean:

This the default. I know there is a function in the Layer List Widget that expands all layers, but I only want to expand the 1st one in the image here. 

Here is what I want the Layer List to look like when it is first opened:

[RobertScheitlin__GISP · Accepted solution]

Tim,

  Sure I have answered that one before, and I just retested to make sure it still works in 2.11.

https://community.esri.com/thread/187292-layerlist-widget-expand-on-startup