Fix sphinx warnings for model base methods.
Fix sphinx warnings for model base methods.

jbeezley/girder,adsorensen/girder,Kitware/girder,RafaelPalomar/girder,data-exp-lab/girder,adsorensen/girder,girder/girder,manthey/girder,opadron/girder,chrismattmann/girder,kotfic/girder,jbeezley/girder,Xarthisius/girder,Xarthisius/girder,salamb/girder,jcfr/girder,salamb/girder,opadron/girder,salamb/girder,essamjoubori/girder,manthey/girder,Kitware/girder,girder/girder,data-exp-lab/girder,jbeezley/girder,opadron/girder,msmolens/girder,girder/girder,msmolens/girder,Kitware/girder,salamb/girder,sutartmelson/girder,chrismattmann/girder,data-exp-lab/girder,adsorensen/girder,Xarthisius/girder,RafaelPalomar/girder,essamjoubori/girder,opadron/girder,jcfr/girder,msmolens/girder,jcfr/girder,sutartmelson/girder,kotfic/girder,chrismattmann/girder,jcfr/girder,kotfic/girder,adsorensen/girder,manthey/girder,manthey/girder,opadron/girder,kotfic/girder,Xarthisius/girder,essamjoubori/girder,jcfr/girder,RafaelPalomar/girder,data-exp-lab/girder,Xarthisius/girder,salamb/girder,kotfic/girder,girder/girder,chrismattmann/girder,Kitware/girder,RafaelPalomar/girder,RafaelPalomar/girder,jbeezley/girder,essamjoubori/girder,msmolens/girder,adsorensen/girder,sutartmelson/girder,essamjoubori/girder,msmolens/girder,sutartmelson/girder,data-exp-lab/girder,chrismattmann/girder,sutartmelson/girder