/*
 * 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
 *
 *      https://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.commons.lang3.event;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.apache.commons.lang3.reflect.MethodUtils;

/**
 * Provides some useful event-based utility methods.
 *
 * @since 3.0
 */
public class EventUtils {

    private static final class EventBindingInvocationHandler implements InvocationHandler {
        private final Object target;
        private final String methodName;
        private final Set<String> eventTypes;

        /**
         * Creates a new instance of {@link EventBindingInvocationHandler}.
         *
         * @param target the target object for method invocations.
         * @param methodName the name of the method to be invoked.
         * @param eventTypes the names of the supported event types.
         */
        EventBindingInvocationHandler(final Object target, final String methodName, final String[] eventTypes) {
            this.target = target;
            this.methodName = methodName;
