text: <?php
  /**
   * Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License").
   * You may not use this file except in compliance with the License.
   * A copy of the License is located at
   *
   * http://aws.amazon.com/apache2.0
   *
   * or in the "license" file accompanying this file. This file 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.
   */
  
  namespace Aws\Sqs\Enum;
  
  use Aws\Common\Enum;
  
  /**
   * Contains enumerable MessageAttribute values
   */
  class MessageAttribute extends Enum
  {
      const ALL = 'All';
      const SENDER_ID = 'SenderId';
      const SENT_TIMESTAMP = 'SentTimestamp';
      const APPROXIMATE_RECEIVE_COUNT = 'ApproximateReceiveCount';
      const APPROXIMATE_FIRST_RECEIVE_TIMESTAMP = 'ApproximateFirstReceiveTimestamp';
  }
  