/** * addPsr4 * * @param string|array $class * @param string $path * * @return $this */ public function addPsr4($class, $path = null) { if (is_array($class)) { foreach ($class as $ns => $path) { $this->psr4->addNamespace($ns, $path); } } else { $this->psr4->addNamespace($class, $path); } return $this; }