wp-includes/block-template.php:28Renders a warning screen for empty block templates.
$block_templateWP_Block_Templatestringfunction wp_render_empty_block_template_warning( $block_template ) { wp_enqueue_style( 'wp-empty-template-alert' ); return sprintf( /* translators: %1$s: Block template title. %2$s: Empty template warning message. %3$s: Edit template link. %4$s: Edit template button label. */ '<div id="wp-empty-template-alert"> <h2>%1$s</h2> <p>%2$s</p> <a href="%3$s" class="wp-element-button"> %4$s </a> </div>', esc_html( $block_template->title ), __( 'This page is blank because the template is empty. You can reset or customize it in the Site Editor.' ), get_edit_post_link( $block_template->wp_id, 'site-editor' ), __( 'Edit template' ) );}Introduced in 6.8.0. Unchanged from 6.8.8 through 7.1.0.
Signature, return type and hooks compared across 4 parsed releases.
src/wp-includes/block-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.