extern crate slab_tree;
use slab_tree::*;
fn main() {
let mut tree = TreeBuilder::new().with_root("hello").build();
let root_id = tree.root_id().expect("root doesn't exist?");
let mut hello = tree.get_mut(root_id).unwrap();
hello.append("world");
hello.append("trees").append("are").append("cool");
}