Ask for a detailed introduction for StrainDependentPermeability case of TH2M module

Hi all,
I am studying the TH2M module in OGS6. Since this module has not been completely tested, I can never find a detailed introduction for the benchmark named StrainDependentPermeability . Can anyone give me easily-understood description of this case, or provide me with a PDF link like other benchmarks on the website? Thank you very much.