--- a/browser/extensions/formautofill/FormAutofillUtils.jsm
+++ b/browser/extensions/formautofill/FormAutofillUtils.jsm
@@ -49,13 +49,17 @@ this.FormAutofillUtils = {
         log.debug("Label found in input's parent or ancestor.");
         return [parent];
       }
       parent = parent.parentNode;
     } while (parent);
 
     return [];
   },
+
+  categorizeFieldNameIntoGroup(fieldName) {
+    // TODO: categorize 
+  },
 };
 
 this.log = null;
 this.FormAutofillUtils.defineLazyLogGetter(this, this.EXPORTED_SYMBOLS[0]);