add_block(new Block("Upload", $this->build_upload_block(), "head", 20)); $page->add_block(new Block("Upload", $this->build_upload_block(), "left", 20)); } public function display_full(Page $page) { $page->add_block(new Block("Upload", "Disk nearly full, uploads disabled", "head", 20)); } public function display_page(Page $page) { parent::display_page($page); $html = " Tagging Guide "; $page->add_block(new Block(null, $html, "main", 19)); } protected function build_upload_block(): string { $url = make_link("upload"); return "Upload"; } }