ope'         => $class_name,
		)
	);

	// include preset css classes on the the stylesheet.
	$styles .= $theme_json_object->get_stylesheet(
		array( 'presets' ),
		null,
		array(
			'root_selector' => $class_name . ',' . $class_name . ' *',
			'scope'         => $class_name,
		)
	);

	if ( ! empty( $styles ) ) {
		wp_enqueue_block_support_styles( $styles );
	}

	return null;
}

add_filter( 'render_block', '_wp_add_block_level_presets_class', 10, 2 );
add_filter( 'pre_render_block', '_wp_add_block_level_preset_styles', 10, 2 );