Silence override warning in vtkTransferFunctionBoxItem
Silence override warning in vtkTransferFunctionBoxItem

cryos/tomviz,cryos/tomviz,OpenChemistry/tomviz,cryos/tomviz,mathturtle/tomviz,OpenChemistry/tomviz,mathturtle/tomviz,OpenChemistry/tomviz,OpenChemistry/tomviz,mathturtle/tomviz