Doctrine generate Models. Metadata Configuration - codeigniter

Question

I generated Entities with Doctrine's generating method inside Doctrine.php from CodeIgniter Controller:
function generate_classes(){
$this->em->getConfiguration()
->setMetadataDriverImpl(
new DatabaseDriver(
$this->em->getConnection()->getSchemaManager()
)
);
$cmf = new DisconnectedClassMetadataFactory();
$cmf->setEntityManager($this->em);
$metadata = $cmf->getAllMetadata();
$generator = new EntityGenerator();
$generator->setUpdateEntityIfExists(true);
$generator->setGenerateStubMethods(true);
$generator->setGenerateAnnotations(true);
$generator->generate($metadata, APPPATH."models/Entities");
}
The generated Entity had this syntax:
use Doctrine\ORM\Mapping as ORM;
/**
* Users
*
* #ORM\Table(name="users")
* #ORM\Entityz
*/
class Users
{
/**
* #var integer
*
* #ORM\Column(name="idusers", type="integer", nullable=false)
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
private $idusers;
/**
* #var string
*
* #ORM\Column(name="first_name", type="string", length=45, nullable=true)
*/
private $firstName;
/**
* #var string
*
* #ORM\Column(name="last_name", type="string", length=45, nullable=true)
*/
Now calling these Entities form my model didn't work. The model didn't find the entity. After manually changing the syntax to the following code example, I got it to work:
use Doctrine\ORM\Mapping as ORM;
/**
* Users
*
* #Entity #Table(name="users")
*/
class Users
{
/**
* #var integer
*
* #Column(name="idusers", type="integer", nullable=false)
* #Id
*
*/
private $idusers;
/**
*
* #GeneratedValue
* #Column(name="first_name", type="string", length=45, nullable=true)
*/
private $firstName;
And now everything works!
I am not going to manually change every Entity.
How can I configure Doctrine to produce Entity's with the correct syntax. As used in their tutorials as well? http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/tutorials/getting-started.html
Noob question. Please help!

Answer 1

Found the solution:
changed in application/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/EntityGenerator.php the constructor from:
public function __construct()
{
if (version_compare(\Doctrine\Common\Version::VERSION, '2.2.0-DEV', '>=')) {
$this->annotationsPrefix = 'ORM\\';
}
}
To:
public function __construct()
{
if (version_compare(\Doctrine\Common\Version::VERSION, '2.2.0-DEV', '>=')) {
$this->annotationsPrefix = '';
}
}