Shadow not applying on groups

@no_one345 wrote:

i m working on a diagram where i need shadow on group templates but it is not working in case of groups my group template is

 this.diagram.groupTemplate = Go(go.Group, "Auto", {
  doubleClick: (e, obj) => {
    if (obj instanceof go.Group)
      if (obj.isSubGraphExpanded == false) {
        obj.isSubGraphExpanded = true;
      } else if (obj.isSubGraphExpanded == true) {
        obj.isSubGraphExpanded = false;
      }
  },
  isShadowed: true,
  shadowOffset: new go.Point(43, 0),
  shadowColor: "black",
  background: "transparent",
  // highlight when dragging into the Group
  mouseDragEnter: (e, grp, prev) => {
    this.highlightGroup(e, grp, true);
  },
  mouseDragLeave: (e, grp, next) => {
    this.highlightGroup(e, grp, false);
  },
  computesBoundsAfterDrag: true,
  // resizable: true,
  // when the selection is dropped into a Group, add the selected
  // Parts into that Group;
  // if it fails, cancel the tool, rolling back any changes
  mouseDrop: (e, obj) => this.finishDrop(this, e, obj),
  handlesDragDropForMembers: true, // don't need to define
  // handlers on member Nodes
  // and Links
  // Groups containing Groups lay out their members horizontally
  // layout: Go(go.GridLayout, {
  // wrappingColumn: 4,
  // alignment: go.GridLayout.Position,
  // cellSize: new go.Size(1, 1),
  // spacing: new go.Size(50, 50)
  // }
  // // ,new go.Binding("wrappingColumn", "wrappingColumn",
  // function(h)
  // // {
  // //
  // // return h;
  // //
  // // })
  // )

}, new go.Binding("textEditable", "readOnly", (h) => {
  return !h;
}), new go.Binding("deletable", "readOnly", (h) => {
  return !h;
}), new go.Binding("background", "isHighlighted", (h) => {
  return h ? "rgba((124,252,0),0.8)" : "transparent";.......

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