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/*
* Copyright 2015 the original author or authors.
*
* Licensed 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.glowroot.common;
import java.util.ArrayDeque;
import java.util.Deque;
import java.util.List;
import org.glowroot.shaded.google.common.collect.Lists;
public abstract class Traverser {
private static final Object ALREADY_TRAVERSED_MARKER = new Object();
private final Deque