@@ -809,7 +809,7 @@ public static function set_global_styles_presets() {
 	 *
 	 * @since 6.3.0
 	 *
-	 * @return null|array<string, string> An array of global style block slugs, keyed on the block name.
+	 * @return array<string, string> An array of global style block slugs, keyed on the block name.
 	 */
 	private static function get_all_global_style_block_names() {
 		if ( isset( self::$global_styles_block_names ) ) {
Original file line number	Diff line number	Diff line change
`@@ -809,7 +809,7 @@ public static function set_global_styles_presets() {`
`809`	`809`	`*`
`810`	`810`	`* @since 6.3.0`
`811`	`811`	`*`
`812`		`- * @return null\|array<string, string> An array of global style block slugs, keyed on the block name.`
	`812`	`+ * @return array<string, string> An array of global style block slugs, keyed on the block name.`
`813`	`813`	`*/`
`814`	`814`	`private static function get_all_global_style_block_names() {`
`815`	`815`	`if ( isset( self::$global_styles_block_names ) ) {`