perties
        @description Copy node properties to another node
        @param {Object} oldNode [Source node]
        @param {Object} node [Destination node]
      */
      copyProperties: function (oldNode, node) {
        node.name = oldNode.name;
        node.path = oldNode.path;
        node.extension = !oldNode.extension ? "" : oldNode.extension;
        node.type = !oldNode.type ? "directory" : oldNode.type;
        node.parent = oldNode.parent;
      },
      /*
        @function (private) _sortNod