src/EventEmitterTrait.php
public function emit(string $event, array $arguments = []) : self
    {
        foreach ($this->getListeners($event) as $listener) {
            call_user_func_array($listener, $arguments);
        }

        return $this;
    }
public function emit(string $event, array $arguments = []) : self
    {
        foreach ($this->getListeners($event) as $listener) {
            call_user_func_array($listener, $arguments);
        }

        return $this;
    }
@param string $event
@param array  $arguments

@return $this