Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory::isTransient PHP Method

    public function isTransient($class)
    {
        if (!$this->initialized) {
            $this->initialize();
        }
        // Check for namespace alias
        if (strpos($class, ':') !== false) {
            list($namespaceAlias, $simpleClassName) = explode(':', $class, 2);
            $class = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
        }
        return $this->getDriver()->isTransient($class);
    }