Follow-up from "Feature/simplify effective laws"
The following discussion from !1605 (merged) should be addressed:
@DennisGlaeser started a discussion: (+3 comments)
I thought we removed wPhaseIdx from the Indices and made this a runtime-thing? How does this actually compile?
Make wetting phase index retrievable from 2p volvars
Use them in Johansen effective thermal conductivity law