
![image](https://user-images.githubusercontent.com/12162539/50417924-d6cc2b80-0863-11e9-860f-bf9d132db570.png)

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.dubbo.qos.textui;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import static java.lang.System.currentTimeMillis;
import static org.apache.dubbo.common.utils.StringUtils.EMPTY;
import static org.apache.dubbo.common.utils.StringUtils.length;
import static org.apache.dubbo.common.utils.StringUtils.repeat;
/**
 * tree
 */
public class TTree implements TComponent {