parameters: (self, item: vis.PolyDataItem)
docstring: Constructs a VisualItem.
  
          Args:
              vis_item: the PolyDataItem containing the visual element for
                  director's object model.
              user_data: A tuple of objects associated with the item. These
                  can be used by the callbacks for updating.
docstring_summary: Constructs a VisualItem.
docstring_tokens: Constructs a VisualItem .
function: def __init__(self, item: vis.PolyDataItem):
          """Constructs a VisualItem.
  
          Args:
              vis_item: the PolyDataItem containing the visual element for
                  director's object model.
              user_data: A tuple of objects associated with the item. These
                  can be used by the callbacks for updating."""
          self.item = item
          self.user_data = ()
function_tokens: def __init__ ( self , item : vis . PolyDataItem ) : self . item = item self . user_data = ( )