FactoryGirl\Provider\Doctrine\FixtureFactory::getAsSingleton PHP Method

    public function getAsSingleton($name, array $fieldOverrides = array())
    {
        if (isset($this->singletons[$name])) {
            throw new Exception("Already a singleton: {$name}");
        }
        $this->singletons[$name] = $this->get($name, $fieldOverrides);
        return $this->singletons[$name];
    }