/home/kueuepay/public_html/vendor/league/event/src/EmitterTrait.php
<?php

namespace League\Event;

trait EmitterTrait
{
    use EmitterAwareTrait;

    /**
     * Add a listener for an event.
     *
     * The first parameter should be the event name, and the second should be
     * the event listener. It may implement the League\Event\ListenerInterface
     * or simply be "callable".
     *
     * @param string                     $event
     * @param ListenerInterface|callable $listener
     * @param int                        $priority
     *
     * @return $this
     */
    public function addListener($event, $listener, $priority = ListenerAcceptorInterface::P_NORMAL)
    {
        $this->getEmitter()->addListener($event, $listener, $priority);

        return $this;
    }

    /**
     * Add a one time listener for an event.
     *
     * The first parameter should be the event name, and the second should be
     * the event listener. It may implement the League\Event\ListenerInterface
     * or simply be "callable".
     *
     * @param string                     $event
     * @param ListenerInterface|callable $listener
     * @param int                        $priority
     *
     * @return $this
     */
    public function addOneTimeListener($event, $listener, $priority = ListenerAcceptorInterface::P_NORMAL)
    {
        $this->getEmitter()->addOneTimeListener($event, $listener, $priority);

        return $this;
    }

    /**
     * Remove a specific listener for an event.
     *
     * The first parameter should be the event name, and the second should be
     * the event listener. It may implement the League\Event\ListenerInterface
     * or simply be "callable".
     *
     * @param string                     $event
     * @param ListenerInterface|callable $listener
     *
     * @return $this
     */
    public function removeListener($event, $listener)
    {
        $this->getEmitter()->removeListener($event, $listener);

        return $this;
    }

    /**
     * Remove all listeners for an event.
     *
     * The first parameter should be the event name. All event listeners will
     * be removed.
     *
     * @param string $event
     *
     * @return $this
     */
    public function removeAllListeners($event)
    {
        $this->getEmitter()->removeAllListeners($event);

        return $this;
    }

    /**
     * Add listeners from a provider.
     *
     * @param ListenerProviderInterface $provider
     *
     * @return $this
     */
    public function useListenerProvider(ListenerProviderInterface $provider)
    {
        $this->getEmitter()->useListenerProvider($provider);

        return $this;
    }

    /**
     * Emit an event.
     *
     * @param string|EventInterface $event
     *
     * @return EventInterface
     */
    public function emit($event)
    {
        $emitter = $this->getEmitter();
        $arguments = [$event] + func_get_args();

        return call_user_func_array([$emitter, 'emit'], $arguments);
    }
}
Best Practice

Best Practices

To ensure a smooth integration process and optimal performance, follow these best practices:

  1. Use secure HTTPS connections for all API requests.
  2. Implement robust error handling to handle potential issues gracefully.
  3. Regularly update your integration to stay current with any API changes or enhancements.