Cascade\Config\Loader\ClassLoader\HandlerLoader::populateHandlers PHP Method

    private function populateHandlers(array &$handlerOptions, array $handlers)
    {
        $handlerArray = array();
        if (isset($handlerOptions['handlers'])) {
            foreach ($handlerOptions['handlers'] as $handlerId) {
                if (isset($handlers[$handlerId])) {
                    $handlerArray[] = $handlers[$handlerId];
                } else {
                    throw new \InvalidArgumentException(sprintf('Cannot add handler "%s" to the handler. Handler not found.', $handlerId));
                }
            }
            $handlerOptions['handlers'] = $handlerArray;
        }
        if (isset($handlerOptions['handler'])) {
            $handlerId = $handlerOptions['handler'];
            if (isset($handlers[$handlerId])) {
                $handlerOptions['handler'] = $handlers[$handlerId];
            } else {
                throw new \InvalidArgumentException(sprintf('Cannot add handler "%s" to the handler. Handler not found.', $handlerId));
            }
        }
    }