anchor.diff:      CASE iv_action.
         WHEN 'post'.
           save( it_postdata ).
  -      WHEN OTHERS.
  -        _raise 'Unknown action'.
  +        rv_state = gc_event_state-go_back.
       ENDCASE.
   
     ENDMETHOD.
  
positive.code: *----------------------------------------------------------------------*
  INTERFACE lif_gui_page.
  
    METHODS:
      on_event
        IMPORTING iv_action      TYPE clike
                  iv_frame       TYPE clike
                  iv_getdata     TYPE clike
                  it_postdata    TYPE cnht_post_data_tab
                  it_query_table TYPE cnht_query_table
        RAISING   lcx_exception,
      render
        RETURNING VALUE(ro_html) TYPE REF TO lcl_html_helper
        RAISING   lcx_exception,
      get_assets
        EXPORTING et_assets      TYPE tt_web_assets.
  
  ENDINTERFACE.
  
  
negative.code: CLASS lcl_gui_page_db_display DEFINITION FINAL INHERITING FROM lcl_gui_page_super.
  
    PUBLIC SECTION.
      METHODS lif_gui_page~render   REDEFINITION.
  
      METHODS: constructor
  