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   1  <?php
   2  namespace GuzzleHttp\Event;
   3  
   4  /**
   5   * Trait that implements the methods of HasEmitterInterface
   6   */
   7  trait HasEmitterTrait
   8  {
   9      /** @var EmitterInterface */
  10      private $emitter;
  11  
  12      public function getEmitter()
  13      {
  14          if (!$this->emitter) {
  15              $this->emitter = new Emitter();
  16          }
  17  
  18          return $this->emitter;
  19      }
  20  }