Get useVolumetric field value from HDAdditionalLightData by script.

Hi, i need to get information from light if it uses volumetrics. It is just a checkbox in light component ![alt text][1] It is stored in HDAdditionalLightData: ![alt text][2] But i cannot find any way to get it. I also tried Reflections but couldn't get it. Does anyone of you know how to determine if it is true or false? Maybe some indirect way? Thanks in advance. Cheers [1]: /storage/temp/200229-volumetrics1.png [2]: /storage/temp/200230-volumetrics2.png