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   1  <?php
   2  /**
   3   * Zend Framework (http://framework.zend.com/)
   4   *
   5   * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6   * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
   7   * @license   http://framework.zend.com/license/new-bsd New BSD License
   8   */
   9  
  10  namespace Zend\Stdlib;
  11  
  12  interface MessageInterface
  13  {
  14      /**
  15       * Set metadata
  16       *
  17       * @param  string|int|array|\Traversable $spec
  18       * @param  mixed $value
  19       */
  20      public function setMetadata($spec, $value = null);
  21  
  22      /**
  23       * Get metadata
  24       *
  25       * @param  null|string|int $key
  26       * @return mixed
  27       */
  28      public function getMetadata($key = null);
  29  
  30      /**
  31       * Set content
  32       *
  33       * @param  mixed $content
  34       * @return mixed
  35       */
  36      public function setContent($content);
  37  
  38      /**
  39       * Get content
  40       *
  41       * @return mixed
  42       */
  43      public function getContent();
  44  }