$fkTable = \CRM_Core_DAO_AllCoreTables::getTableForClass($fkField['FKClassName']);
$tableAlias = implode('_to_', $subStack) . "_to_$fkTable";
$fkTable = \CRM_Core_DAO_AllCoreTables::getTableForClass($fkField['FKClassName']);
$tableAlias = implode('_to_', $subStack) . "_to_$fkTable";