ENH: no more early bail out from Derive() with empty inputs
ENH: no more early bail out from Derive() with empty inputs

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