Creating more than one Openlayers layer switcher

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I am developing an OpenLayers 3 web application were I would like to incorporate more than one Layer Tree alongside my map.

I have this JSFiddle set up that it has a map with multiple layers and one Layer Tree. I would like to duplicate the layer tree multiple times and have a parameter (as per the one in each layer of the example) that then defines which Layer Tree the layer goes into.

I imagine it involves an extra if statement when building the layer tree at the bottom of the code, similar to the slider option already in there, but i don't seem to be able to make it work.

The solution should also ideally remove the "all layers" group at the top of each Layer Tree.



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