WP_Navigation_Block_Renderer::get_overlay_blocks_from_template_part( string $overlay_template_part_id, array $attributes ): WP_Block_List

378	private static function get_overlay_blocks_from_template_part( $overlay_template_part_id, $attributes ) {379		if ( empty( $overlay_template_part_id ) || ! is_string( $overlay_template_part_id ) ) {380			return new WP_Block_List( array(), $attributes );381		}382 383		// Parse the template part ID (format: "theme//slug").384		// If it's just a slug, construct the full ID using the current theme.385		$parts = explode( '//', $overlay_template_part_id, 2 );386		if ( count( $parts ) === 2 ) {387			// Already in "theme//slug" format (backward compatibility).388			$theme = $parts[0];389			$slug  = $parts[1];390		} else {391			// Just a slug, use current theme.392			$theme = get_stylesheet();393			$slug  = $overlay_template_part_id;394		}395 396		// Only query for template parts from the active theme.397		if ( get_stylesheet() !== $theme ) {398			return new WP_Block_List( array(), $attributes );399		}400 401		// Query for the template part post.402		$template_part_query = new WP_Query(403			array(404				'post_type'           => 'wp_template_part',405				'post_status'         => 'publish',406				'post_name__in'       => array( $slug ),407				'tax_query'           => array(408					array(409						'taxonomy' => 'wp_theme',410						'field'    => 'name',411						'terms'    => $theme,412					),413				),414				'posts_per_page'      => 1,415				'no_found_rows'       => true,416				'lazy_load_term_meta' => false, // Do not lazy load term meta, as template parts only have one term.417			)418		);419 420		$template_part_post = $template_part_query->have_posts() ? $template_part_query->next_post() : null;421 422		if ( ! $template_part_post ) {423			// Try to get from theme file if not in database.424			// Construct the full template part ID for get_block_file_template.425			$full_template_part_id = $theme . '//' . $slug;426			$block_template        = get_block_file_template( $full_template_part_id, 'wp_template_part' );427			if ( isset( $block_template->content ) ) {428				// Expand shortcodes before parsing blocks, matching the order in429				// `render_block_core_template_part()`.430				$content       = shortcode_unautop( $block_template->content );431				$content       = do_shortcode( $content );432				$parsed_blocks = parse_blocks( $content );433				$blocks        = block_core_navigation_filter_out_empty_blocks( $parsed_blocks );434				// Disable overlay menu for any navigation blocks within the overlay to prevent nested overlays.435				$blocks = static::disable_overlay_menu_for_nested_navigation_blocks( $blocks );436				return new WP_Block_List( $blocks, $attributes );437			}438			return new WP_Block_List( array(), $attributes );439		}440 441		// Get the template part content.442		$block_template = _build_block_template_result_from_post( $template_part_post );443		if ( ! isset( $block_template->content ) ) {444			return new WP_Block_List( array(), $attributes );445		}446 447		$parsed_blocks = parse_blocks( $block_template->content );448 449		// 'parse_blocks' includes a null block with '\n\n' as the content when450		// it encounters whitespace. This code strips it.451		$blocks = block_core_navigation_filter_out_empty_blocks( $parsed_blocks );452 453		// Re-serialize, and run Block Hooks algorithm to inject hooked blocks.454		$markup = serialize_blocks( $blocks );455		$markup = apply_block_hooks_to_content_from_post_object( $markup, $template_part_post );456 457		// Expand shortcodes before parsing blocks, matching the order in