EventEmitterInterface.php

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<?php
 
namespace Sabre\Event;
 
interface EventEmitterInterface {
 
    function on($eventName, callable $callBack, $priority = 100);
 
    function once($eventName, callable $callBack, $priority = 100);
 
    function emit($eventName, array $arguments = [], callable $continueCallBack = null);
 
    function listeners($eventName);
 
    function removeListener($eventName, callable $listener);
 
    function removeAllListeners($eventName = null);
 
}