N°4693 - Restore API to add saas entries in the backoffice pages

application/applicationextension.inc.php

@@ -1457,6 +1457,23 @@ interface iBackofficeStyleExtension
 	public function GetStyle(): string;
 }
 
+/**
+ * Implement this interface to add saas file (SCSS) to the backoffice pages.
+ * example: return "css/setup.scss"
+ *
+ * @api
+ * @package BackofficeUIExtensibilityAPI
+ * @since 3.3.0
+ */
+interface iBackofficeSaasExtension
+{
+	/**
+	 * @api
+	 * @see \iTopWebPage::$a_styles
+	 * @return string
+	 */
+	public function GetSaas(): string;
+}
 /**
  * Implement this interface to add Dict entries
  *