code: def system(self, object, highlight=None, alpha=1.0, color=None, 
                       transparent=None):
          '''Display System object'''
          if self.backend == 'povray':
              kwargs = {}
              if color is not None:
                  kwargs['color'] = color
              else:
                  kwargs['color'] = default_colormap[object.type_array]
              
              self.plotter.camera.autozoom(object.r_array)
              self.plotter.points(object.r_array, alpha=alpha, **kwargs)
              return self system(self, object, highlight=None, alpha=1.0, color=None, 
                       transparent=None):
          '''Display System object'''
          if self.backend == 'povray':
              kwargs = {}
              if color is not None:
                  kwargs['color'] = color
              else:
                  kwargs['color'] = default_colormap[object.type_array]
              
              self.plotter.camera.autozoom(object.r_array)
              self.plotter.points(object.r_array, alpha=alpha, **kwargs)
              return self
docs: Display System object