public function addUnlinked(Tree $tree): ResponseInterface
    {
        return $this->viewResponse('edit/new-individual', [
            'tree'       => $tree,
            'title'      => I18N::translate('Create an individual'),
            'nextaction' => 'add_unlinked_indi_action',
            'individual' => null,
            'family'     => null,
            'name_fact'  => null,
            'famtag'     => '',
            'gender'     => 'U',
        ]);
    }