anchor.diff:  
       METHODS db_delete
         IMPORTING iv_getdata     TYPE clike
  +      RAISING   lcx_exception.
  +
  +    METHODS db_save
  +      IMPORTING it_postdata TYPE cnht_post_data_tab
         RAISING   lcx_exception.
   
   ENDCLASS.
  
positive.code: 
    PRIVATE SECTION.
      DATA: ms_key TYPE lcl_persistence_db=>ty_content.
  
      METHODS: save
        IMPORTING it_postdata TYPE cnht_post_data_tab
        RAISING   lcx_exception.
  
  ENDCLASS.
  
  
negative.code: CLASS lcl_gui_page_db_edit DEFINITION FINAL INHERITING FROM lcl_gui_page_super.
  
    PUBLIC SECTION.
      METHODS lif_gui_page~render   REDEFINITION.
  
      METHODS: constructor
  