_treeFor(name) {
    let treePath = path.resolve(this.root, this.treePaths[name]);
    let treeForMethod = this.treeForMethods[name];
    let tree;

    if (fs.existsSync(treePath)) {
      tree = this.treeGenerator(treePath);
    }

    if (this[treeForMethod]) {
      tree = this[treeForMethod](tree);
    }

    return tree;
  }
@private
    @param {String} name
    @method _treeFor
    @return {tree}