$permission = CRM_ACL_API::whereClause($type, $tables, $whereTables, NULL, FALSE, FALSE, TRUE);
$from = CRM_Contact_BAO_Query::fromClause($whereTables);
$permission = CRM_ACL_API::whereClause($type, $tables, $whereTables, NULL, FALSE, FALSE, TRUE);
$from = CRM_Contact_BAO_Query::fromClause($whereTables);