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   1  <?php
   2  namespace GuzzleHttp\Event;
   3  
   4  /**
   5   * Base event interface used when dispatching events to listeners using an
   6   * event emitter.
   7   */
   8  interface EventInterface
   9  {
  10      /**
  11       * Returns whether or not stopPropagation was called on the event.
  12       *
  13       * @return bool
  14       * @see Event::stopPropagation
  15       */
  16      public function isPropagationStopped();
  17  
  18      /**
  19       * Stops the propagation of the event, preventing subsequent listeners
  20       * registered to the same event from being invoked.
  21       */
  22      public function stopPropagation();
  23  }