BUG: When the underlying table model has no vertical header, return the row index. TODO: Make this an option in the class.
BUG: When the underlying table model has no vertical header, return the row index. TODO: Make this an option in the class.

cjh1/VTK,biddisco/VTK,jmerkow/VTK,berendkleinhaneveld/VTK,gram526/VTK,ashray/VTK-EVM,msmolens/VTK,johnkit/vtk-dev,jeffbaumes/jeffbaumes-vtk,SimVascular/VTK,collects/VTK,jmerkow/VTK,cjh1/VTK,keithroe/vtkoptix,candy7393/VTK,candy7393/VTK,biddisco/VTK,daviddoria/PointGraphsPhase1,sumedhasingla/VTK,gram526/VTK,ashray/VTK-EVM,msmolens/VTK,sumedhasingla/VTK,aashish24/VTK-old,berendkleinhaneveld/VTK,arnaudgelas/VTK,keithroe/vtkoptix,collects/VTK,Wuteyan/VTK,berendkleinhaneveld/VTK,biddisco/VTK,collects/VTK,mspark93/VTK,spthaolt/VTK,arnaudgelas/VTK,arnaudgelas/VTK,aashish24/VTK-old,naucoin/VTKSlicerWidgets,mspark93/VTK,SimVascular/VTK,msmolens/VTK,daviddoria/PointGraphsPhase1,gram526/VTK,sumedhasingla/VTK,daviddoria/PointGraphsPhase1,msmolens/VTK,ashray/VTK-EVM,spthaolt/VTK,SimVascular/VTK,cjh1/VTK,sankhesh/VTK,biddisco/VTK,cjh1/VTK,sumedhasingla/VTK,msmolens/VTK,demarle/VTK,aashish24/VTK-old,keithroe/vtkoptix,ashray/VTK-EVM,ashray/VTK-EVM,gram526/VTK,johnkit/vtk-dev,SimVascular/VTK,spthaolt/VTK,sankhesh/VTK,gram526/VTK,jmerkow/VTK,hendradarwin/VTK,hendradarwin/VTK,collects/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,johnkit/vtk-dev,jmerkow/VTK,mspark93/VTK,spthaolt/VTK,sankhesh/VTK,ashray/VTK-EVM,mspark93/VTK,sankhesh/VTK,biddisco/VTK,SimVascular/VTK,sankhesh/VTK,spthaolt/VTK,msmolens/VTK,naucoin/VTKSlicerWidgets,cjh1/VTK,spthaolt/VTK,johnkit/vtk-dev,demarle/VTK,collects/VTK,hendradarwin/VTK,keithroe/vtkoptix,jeffbaumes/jeffbaumes-vtk,Wuteyan/VTK,hendradarwin/VTK,arnaudgelas/VTK,jeffbaumes/jeffbaumes-vtk,sankhesh/VTK,johnkit/vtk-dev,gram526/VTK,mspark93/VTK,keithroe/vtkoptix,demarle/VTK,hendradarwin/VTK,SimVascular/VTK,arnaudgelas/VTK,johnkit/vtk-dev,spthaolt/VTK,demarle/VTK,sumedhasingla/VTK,mspark93/VTK,cjh1/VTK,naucoin/VTKSlicerWidgets,Wuteyan/VTK,msmolens/VTK,aashish24/VTK-old,keithroe/vtkoptix,hendradarwin/VTK,naucoin/VTKSlicerWidgets,ashray/VTK-EVM,daviddoria/PointGraphsPhase1,SimVascular/VTK,Wuteyan/VTK,daviddoria/PointGraphsPhase1,johnkit/vtk-dev,arnaudgelas/VTK,demarle/VTK,aashish24/VTK-old,jmerkow/VTK,sumedhasingla/VTK,sumedhasingla/VTK,daviddoria/PointGraphsPhase1,jmerkow/VTK,candy7393/VTK,sankhesh/VTK,collects/VTK,Wuteyan/VTK,hendradarwin/VTK,jeffbaumes/jeffbaumes-vtk,biddisco/VTK,berendkleinhaneveld/VTK,demarle/VTK,candy7393/VTK,candy7393/VTK,jmerkow/VTK,mspark93/VTK,keithroe/vtkoptix,Wuteyan/VTK,gram526/VTK,biddisco/VTK,msmolens/VTK,demarle/VTK,naucoin/VTKSlicerWidgets,mspark93/VTK,berendkleinhaneveld/VTK,jeffbaumes/jeffbaumes-vtk,Wuteyan/VTK,ashray/VTK-EVM,sankhesh/VTK,berendkleinhaneveld/VTK,gram526/VTK,jmerkow/VTK,sumedhasingla/VTK,candy7393/VTK,jeffbaumes/jeffbaumes-vtk,SimVascular/VTK,candy7393/VTK,demarle/VTK,candy7393/VTK,naucoin/VTKSlicerWidgets,aashish24/VTK-old