BUG: fixed aggregation when input model is a vtkMultiBlockDataSet
BUG: fixed aggregation when input model is a vtkMultiBlockDataSet

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