/**
* Get total quantity of potential members meeting condition(s)
* @param Backend\Adapter\AbstractAdapter $backend
*/
protected function _count(Backend\Adapter\AbstractAdapter $backend = null)
{
if (is_null($backend)) {
$backend = ObjectModel::getObjectBackend($this->_do->getClass());
}
if (is_null($backend)) {
$backend = Backend::getDefaultBackend();
}
$this->_max = (int) Backend::find($this, $backend, true);
}
