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namespace GuzzleHttp\Event;
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* Base event interface used when dispatching events to listeners using an
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interface EventInterface
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* Returns whether or not stopPropagation was called on the event.
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* @see Event::stopPropagation
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public function isPropagationStopped();
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* Stops the propagation of the event, preventing subsequent listeners
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* registered to the same event from being invoked.
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public function stopPropagation();