/**
* Checks if active roles have a given permission
*
* @param integer $permission
* @return unknown
*/
public final function hasPermission(__Permission $permission)
{
$return_value = false;
if ($permission == null) {
$return_value = true;
} else {
$active_roles_equivalent_permission = $this->_active_roles->getEquivalentPermission();
if ($permission->isJuniorPermissionOf($active_roles_equivalent_permission)) {
$return_value = $permission->checkPermission();
}
}
return $return_value;
}