EntityGenerator does not create uniqueConstraints annotations

private function _generateTableAnnotation($metadata)
{
    $table = array();

    if (isset($metadata->table['schema'])) {
         $table[] = 'schema="' . $metadata->table['schema'] . '"';
    }

    if (isset($metadata->table['name'])) {
        $table[] = 'name="' . $metadata->table['name'] . '"';
    }

    return '@' . $this->_annotationsPrefix . 'Table(' . implode(', ', $table) . ')';
}