public function __construct($serviceName, $serviceBinding, $handlers = array(), $config = null)
{
$this->serviceName = $serviceName;
$this->serviceBinding = $serviceBinding;
$this->handlers = $handlers;
if ($config == null) {
$configFile = PPConfigManager::getInstance();
$this->config = $configFile->getConfigHashmap();
} else {
$this->config = PPConfigManager::mergrDefaults($config);
}
}