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The XPath engine used by HtmlUnit.

There is a newer version: 4.7.0

/*
 * 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.htmlunit.xpath;

/**
 * A class that implements this interface will call a XPathVisitor for itself and members within its
 * hierarchy. If the XPathVisitor's method returns false, the sub-member hierarchy will not be
 * traversed.
 */
public interface XPathVisitable {
  /**
   * This will traverse the hierarchy, calling the visitor for each member. If the called visitor
   * method returns false, the subtree should not be called.
   *
   * @param visitor The visitor whose appropriate method will be called.
   */
  void callVisitors(XPathVisitor visitor);
}