"name" attribute in @Field annotation

It looks like that "name" attribute is not supported anymore in @Field annotation

http://www.doctrine-project.org/projects/mongodb_odm/1.0/docs/reference/annotations-reference/en#ann_field
> name - By default the property name is used for the mongodb field name also, however the 'name' attribute allows you to specify the field name.

For instance the code below produces a document inside "mydocs" collection which has only one property "first_name" instead of two:

/** @Document(collection="mydocs") */
class MyDocument
{
/** @Id */
public $id;

/** @Field(type="string") */
public $first_name;

/** @Field(type="string", name="last_name") */
protected $_last_name;

public function __get($propertyName)
{
return $this->

= $propertyValue;
}
}

$doc = new MyDocument();
$doc->first_name = 'aaa';
$doc->last_name = 'bbb';
dm()->persist($doc);
dm()->flush();