* @param {Object} oldconfig DEPRECIATED Either a prebuilt {@link Roo.form.Field} instance or a Field config object
*
* @cfg {Roo.tree.TreePanel} tree The tree to bind to.
* @param {Object} oldconfig DEPRECIATED Either a prebuilt {@link Roo.form.Field} instance or a Field config object
*
* @cfg {Roo.tree.TreePanel} tree The tree to bind to.