fix unknown type

Author: christianguenter2

src/z2ui5_cl_demo_app_212.clas.abap

@@ -19,7 +19,7 @@ CLASS z2ui5_cl_demo_app_212 DEFINITION
   PROTECTED SECTION.
     DATA mv_table             TYPE string.
     DATA mt_comp              TYPE abap_component_tab.
-    DATA mt_dfies             TYPE z2ui5_cl_util=>ty_t_dfies.
+    DATA mt_dfies             TYPE z2ui5_cl_util_ext=>ty_t_dfies.
     DATA client            TYPE REF TO z2ui5_if_client.
 
 
@@ -115,7 +115,7 @@ CLASS z2ui5_cl_demo_app_212 IMPLEMENTATION.
 
   METHOD get_dfies.
 
-    mt_dfies = z2ui5_cl_util=>rtti_get_t_dfies_by_table_name( mv_table ).
+    mt_dfies = z2ui5_cl_util_ext=>rtti_get_t_dfies_by_table_name( mv_table ).
 
   ENDMETHOD.