anchor.diff:      DATA mo_html_viewer TYPE REF TO cl_gui_html_viewer .
   
       METHODS on_event
  -        FOR EVENT sapevent OF cl_gui_html_viewer
  +      FOR EVENT sapevent OF cl_gui_html_viewer
         IMPORTING
           !action
           !frame
  
positive.code:         dp_invalid_parameter   = 1
          dp_error_general       = 2
          cntl_error             = 3
          html_syntax_notcorrect = 4 ).
      IF sy-subrc <> 0.
        zcx_abapgit_exception=>raise( 'Error loading data for HTML viewer' ).
      ENDIF.
  
negative.code: 
  
  
  CLASS zcl_abapgit_html_viewer_gui IMPLEMENTATION.
  
  
    METHOD constructor.
  