code: def getActors(self):
          
          cl = vtk.vtkPropCollection()
          self.GetActors(cl)
          self.actors = []
          cl.InitTraversal()
          for i in range(self.GetNumberOfPaths()):
              act = vtk.vtkActor.SafeDownCast(cl.GetNextProp())
              if act.GetPickable():
                  self.actors.append(act)
          return self.actors
docs: Unpack a list of ``vtkActor`` objects from a ``vtkAssembly``.