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Google HTTP Client Library for Java. Functionality that works on all supported Java platforms, including Java 5 (or higher) desktop (SE) and web (EE), Android, and Google App Engine.

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/*
 * Copyright (c) 2013 Google Inc.
 *
 * 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 com.google.api.client.util;

import java.util.HashSet;
import java.util.Set;
import java.util.TreeSet;

/**
 * Static utility methods pertaining to {@link Set} instances.
 *
 * 
 * NOTE: this is a copy of a subset of Guava's {@link com.google.common.collect.Sets}. The
 * implementation must match as closely as possible to Guava's implementation.
 * 
 *
 * @since 1.14
 * @author Yaniv Inbar
 */
public final class Sets {

  /** Returns a new mutable, empty {@code HashSet} instance. */
  public static  HashSet newHashSet() {
    return new HashSet();
  }

  /**
   * Returns a new mutable, empty {@code TreeSet} instance sorted by the natural sort ordering of
   * its elements.
   */
  public static > TreeSet newTreeSet() {
    return new TreeSet();
  }

  private Sets() {
  }
}