show
Sets the visibility of the given model, and notifies that the item changed if the newvisibility is different from the previous.
Parameters
model
The model to show. It should already be added to the models list.
show
True to show the model, false to hide it.
Shows the given model, and notifies that the item changed if the item wasn't already shown.
Parameters
model
The model to show. It should already be added to the models list.