public function count()
{
if (is_null($this->_count)) {
$this->_count = count($this->_search(array('AND' => array(array('field' => $this->toDriver('__owner'), 'op' => '=', 'test' => $this->getContactOwner()))), array($this->toDriver('__key'))));
}
return $this->_count;
}