gtk:tree-list-model-new (root passthrough autoexpand func)

root -- a g:list-model object to use as root
passthrough -- true to pass through items from the models
autoexpand -- true to set the autoexpand property and expand the root model
func -- a gtk:tree-list-model-create-model-func callback function to create the g:list-model object for the children of an item

Creates a new empty gtk:tree-list-model object displaying root with all rows collapsed.