src/EventEmitter.js
/**
         * Removes an event handler for an event
         * @param event
         * @param listener
         */
Removes an event handler for an event
@param event
@param listener
Removes an event handler for an event @param event @param listener
removeListener(event, listener) {
            if (this._events[event]) {
                let idx = this._events[event].indexOf(listener);
                if (idx >= 0) {
                    this._events[event].splice(idx, 1);
                }
            }
        }
removeListener ( event , listener ) { if ( this . _events [ event ] ) { let idx = this . _events [ event ] . indexOf ( listener ) ; if ( idx >= 0 ) { this . _events [ event ] . splice ( idx , 1 ) ; } } }
Removes an event handler for an event
 @param event
 @param listener
Removes an event handler for an event @param event @param listener