Question Access to Active Target Properties in ShaderGraph

I would like my shader to be able work with both one or two sided textures. Is it possible to access the settings exposed in the ShaderGraph by the "Universal" renderer in the Graph Inspector's Graph Settings tab called "Two Sided"?

I though predefined keywords might be the answer. But I've tried to guess at various "Keyword" properties using the "Predefined" Definition option. I could not find much help on what those possible Predefines might be.

Right now I create and ship two separate shaders; one with the option on and another with it off. It would be best to expose the option on the Material Inspector by allowing setting it in the ShaderGraph from a Boolean Property Input node.

 

I've been looking into a similar issue as well. I'd like to be able to change between specular and metallic workflow similar to the default lit shaders but can't find anything online.