diff --git a/src/cl_ctmenu.clas.abap b/src/cl_ctmenu.clas.abap
index 7b0ea0b..962e87d 100644
--- a/src/cl_ctmenu.clas.abap
+++ b/src/cl_ctmenu.clas.abap
@@ -1,7 +1,23 @@
 CLASS cl_ctmenu DEFINITION PUBLIC.
   PUBLIC SECTION.
+    METHODS hide_functions
+      IMPORTING
+        fcodes TYPE ui_functions.
+
+    METHODS add_function
+      IMPORTING
+        fcode TYPE string
+        text  TYPE string.
 ENDCLASS.
 
 CLASS cl_ctmenu IMPLEMENTATION.
 
+  METHOD add_function.
+    RETURN. " todo, implement method
+  ENDMETHOD.
+
+  METHOD hide_functions.
+    RETURN. " todo, implement method
+  ENDMETHOD.
+
 ENDCLASS.
\ No newline at end of file