/**
 * JBoss, Home of Professional Open Source
 * Copyright Red Hat, Inc., and individual contributors.
 *
 * 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.jboss.aerogear.unifiedpush.utils;

import java.util.Collection;
import java.util.Map;

public final class ValidationUtils {

    private ValidationUtils() {
    }

    public static <E> boolean isEmpty(Collection<E> c) {
        return c == null || c.isEmpty();
    }

    public static <K, V> boolean isEmpty(Map<K, V> map) {
        return map == null || map.isEmpty();
    }

    public static boolean isEmpty(String str) {
        return str == null || "".equals(str);
    }
}

@@ -755,16 +755,88 @@
 l.Map;%0A%0A
+/**%0A * Utility class offering methods for validating instances.%0A * %0A */%0A
 public f
@@ -912,218 +912,770 @@
     
-public static %3CE%3E boolean isEmpty(Collection%3CE%3E c) %7B%0A        return c == null %7C%7C c.isEmpty();%0A    %7D%0A%0A    public static %3CK, V%3E boolean isEmpty(Map%3CK, V%3E map) %7B%0A        return map == null %7C%7C map.isEmpty();%0A    %7D%0A
+/**%0A     * Checks if the given %7B@link Collection%7D is null or empty.%0A     * %0A     * @param c the collection to be checked%0A     * @return true if null or empty and false otherwise%0A     */%0A    public static %3CE%3E boolean isEmpty(Collection%3CE%3E c) %7B%0A        return c == null %7C%7C c.isEmpty();%0A    %7D%0A%0A    /**%0A     * Checks if the given %7B@link Map%7D is null or empty.%0A     * %0A     * @param map the map to be checked%0A     * @return true if null or empty and false otherwise%0A     */%0A    public static %3CK, V%3E boolean isEmpty(Map%3CK, V%3E map) %7B%0A        return map == null %7C%7C map.isEmpty();%0A    %7D%0A%0A    /**%0A     * Checks if the given %7B@link String%7D is null or empty.%0A     * %0A     * @param str the string to be checked%0A     * @return true if null or empty and false otherwise%0A     */
 %0A   

Add javadoc comments in ValidationUtils