page item in the list.
		 *
		 * @since 2.8.0
		 *
		 * @see wp_list_pages()
		 *
		 * @param string[] $css_class       An array of CSS classes to be applied to each list item.
		 * @param WP_Post  $page            Page data object.
		 * @param int      $depth           Depth of page, used for padding.
		 * @param array    $args            An array of arguments.
		 * @param int      $current_page_id ID of the current page.
		 */
		$css_classes = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page_id ) );
		$css_classes = $css_classes ? ' class="' . esc_attr( $css_classes ) . '"' : '';

		if ( '' === $page->post_title ) {
			/* translators: %d: ID of a post. */
			$page->post_title = sprintf( __( '#%d (no title)' ), $page->ID );
		}

		$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
		$args['link_after']  = empty( $args['link_after'] ) ? '' : $args['link_after'];

		$atts                 = array();
		$atts['href']         = get_permalink( $page->ID );
		$atts['aria-current'] = ( $page->ID === (int) $current_page_id ) ? 'page' : '';

		/**
		 * Filters the HTML attributes applied to a page menu item's anchor element.
		 *
		 * @since 4.8.0
		 *
		 * @param array $atts {
		 *     The HTML attributes applied to the menu item's `<a>` element, empty strings are ignored.
		 *
		 *     @type string $href         The href attribute.
		 *     @type string $aria-current The aria-current attribute.
		 * }
		 * @param WP_Post $page            Page data object.
		 * @param int     $depth           Depth of page, used for padding.
		 * @param array   $args            An array of arguments.
		 * @param int     $current_page_id ID of the current page.
		 */
		$atts = apply_filters( 'page_menu_link_attributes', $atts, $page, $depth, $args, $current_page_id );

		$attributes = '';
		foreach ( $atts as $attr => $value ) {
			if ( is_scalar( $value ) && '' !== $value && false !== $value ) {
				$value       = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
				$attributes .= ' ' . $attr . '="' . $value . '"';
			}
		}

		$output .= $indent . sprintf(
			'<li%s><a%s>%s%s%s</a>',
			$css_classes,
			$attributes,
			$args['link_before'],
			/** This filter is documented in wp-includes/post-template.php */
			apply_filters( 'the_title', $page->post_title, $page->ID ),
			$args['link_after']
		);

		if ( ! empty( $args['show_date'] ) ) {
			if ( 'modified' === $args['show_date'] ) {
				$time = $page->post_modified;
			} else {
				$time = $page->post_date;
			}

			$date_format = empty( $args['date_format'] ) ? '' : $args['date_format'];
			$output     .= ' ' . mysql2date( $date_format, $time );
		}
	}

	/**
	 * Outputs the end of the current element in the tree.
	 *
	 * @since 2.1.0
	 * @since 5.9.0 Renamed `$page` to `$data_object` to match parent class for PHP 8 named parameter support.
	 *
	 * @see Walker::end_el()
	 *
	 * @param string  $output      Used to append additional content. Passed by reference.
	 * @param WP_Post $data_object Page data object. Not used.
	 * @param int     $depth       Optional. Depth of page. Default 0 (unused).
	 * @param array   $args        Optional. Array of arguments. Default empty array.
	 */
	public function end_el( &$output, $data_object, $depth = 0, $args = array() ) {
		if ( isset( $args['item_spacing'] ) && 'preserve' === $args['item_spacing'] ) {
			$t = "\t";
			$n = "\n";
		} else {
			$t = '';
			$n = '';
		}
		$output .= "</li>{$n}";
	}
}
.org/items' => array(
				'href' => rest_url( rest_get_route_for_post_type_items( $post_type->name ) ),
			),
		);
	}

	/**
	 * Retrieves the post type's schema, conforming to JSON Schema.
	 *
	 * @since 4.7.0
	 * @since 4.8.0 The `supports` property was added.
	 * @since 5.9.0 The `visibility` and `rest_namespace` properties were added.
	 * @since 6.1.0 The `icon` property was added.
	 *
	 * @return array Item schema data.
	 */
	public function get_item_schema() {
		if ( $this->schema ) {
			return $this->add_additional_fields_schema( $this->schema );
		}

		$schema = array(
			'$schema'    => 'http://json-schema.org/draft-04/schema#',
			'title'      => 'type',
			'type'       => 'object',
			'properties' => array(
				'capabilities'   => array(
					'description' => __( 'All capabilities used by the post type.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'description'    => array(
					'description' => __( 'A human-readable description of the post type.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit' ),
					'readonly'    => true,
				),
				'hierarchical'   => array(
					'description' => __( 'Whether or not the post type should have children.' ),
					'type'        => 'boolean',
					'context'     => array( 'view', 'edit' ),
					'readonly'    => true,
				),
				'viewable'       => array(
					'description' => __( 'Whether or not the post type can be viewed.' ),
					'type'        => 'boolean',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'labels'         => array(
					'description' => __( 'Human-readable labels for the post type for various contexts.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'name'           => array(
					'description' => __( 'The title for the post type.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit', 'embed' ),
					'readonly'    => true,
				),
				'slug'           => array(
					'description' => __( 'An alphanumeric identifier for the post type.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit', 'embed' ),
					'readonly'    => true,
				),
				'supports'       => array(
					'description' => __( 'All features, supported by the post type.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'has_archive'    => array(
					'description' => __( 'If the value is a string, the value will be used as the archive slug. If the value is false the post type has no archive.' ),
					'type'        => array( 'string', 'boolean' ),
					'context'     => array( 'view', 'edit' ),
					'readonly'    => true,
				),
				'taxonomies'     => array(
					'description' => __( 'Taxonomies associated with post type.' ),
					'type'        => 'array',
					'items'       => array(
						'type' => 'string',
					),
					'context'     => array( 'view', 'edit' ),
					'readonly'    => true,
				),
				'rest_base'      => array(
					'description' => __( 'REST base route for the post type.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit', 'embed' ),
					'readonly'    => true,
				),
				'rest_namespace' => array(
					'description' => __( 'REST route\'s namespace for the post type.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit', 'embed' ),
					'readonly'    => true,
				),
				'visibility'     => array(
					'description' => __( 'The visibility settings for the post type.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
					'properties'  => array(
						'show_ui'           => array(
							'description' => __( 'Whether to generate a default UI for managing this post type.' ),
							'type'        => 'boolean',
						),
						'show_in_nav_menus' => array(
							'description' => __( 'Whether to make the post type available for selection in navigation menus.' ),
							'type'        => 'boolean',
						),
					),
				),
				'icon'           => array(
					'description' => __( 'The icon for the post type.' ),
					'type'        => array( 'string', 'null' ),
					'context'     => array( 'view', 'edit', 'embed' ),
					'readonly'    => true,
				),
			),
		);

		$this->schema = $schema;

		return $this->add_additional_fields_schema( $this->schema );
	}

	/**
	 * Retrieves the query params for collections.
	 *
	 * @since 4.7.0
	 *
	 * @return array Collection parameters.
	 */
	public function get_collection_params() {
		return array(
			'context' => $this->get_context_param( array( 'default' => 'view' ) ),
		);
	}
}