Fixtures/Executor/ReferenceRepository.php
public function get($key)
    {
        if (!$this->repository->containsKey($key))
            throw new ReferenceDoesNotExistException();
        return $this->repository->get($key);
    }
public function get($key)
    {
        if (!$this->repository->containsKey($key))
            throw new ReferenceDoesNotExistException();
        return $this->repository->get($key);
    }
Retrieves a reference identified by key

@param $key
@return mixed
@throws ReferenceDoesNotExistException if no reference exists identified by specified key