using System.Collections; public class replaceRootNodeAt : NodeEditor { public Either _edit(LoggingNode _e) { Either either = _e.replaceNewRootNode(); if(either.isA()){ // error return either; } return DefaultEither.newB(either.b()); } public Either edit(TreeNode _e) { LoggingNode logNode = wrap(_e); return _edit(logNode); } public LoggingNode wrap(TreeNode node) { return new LoggingNode(node); } public LoggingNode wrap(TreeNode node, OperationLog op) { return new LoggingNode(node, op); } }