EventManager.dispatchEvent C# (CSharp) Method

    public bool dispatchEvent(CustomEvent evt)
    {
        string eventType = evt.type;
        if (!checkForEvent(eventType)) {
            if (allowWarningOutputs) {
                Debug.LogWarning("Event Manager: Event \"" + eventType + "\" triggered has no listeners!");
            }
            return false;
        }

        ArrayList listenerList = _listeners[eventType] as ArrayList;
        if (allowDebugOutputs) {
            Debug.Log("Event Manager: Event " + eventType + " dispatched to " + listenerList.Count + ((listenerList.Count == 1) ? " listener." : " listeners."));
        }
        foreach (EventListener callback in listenerList) {
            if (callback.listener && callback.listener.activeSelf) {
                callback.listener.SendMessage(callback.function, evt, SendMessageOptions.DontRequireReceiver);
            }
        }
        return false;
    }