/**
* Find an existing revision
*
* @param string The row status to look for
* @return boolean
*/
protected function _countRevisions($status = null)
{
$query = array('table' => $this->getTable()->getName(), 'row' => $this->id);
if ($status) {
$query['status'] = $status;
}
return $this->_table->count($query);
}