public function getHandler($handlerClass)
{
if (!class_exists($handlerClass)) {
CommandHelper::implementationNotice($handlerClass, ' class');
exit(1);
} else {
$handler = new $handlerClass();
}
if (!in_array('HandlerInterface', class_implements($handler))) {
CommandHelper::implementationError($handlerClass, 'HandlerInterface');
exit(1);
}
return $handler;
}
