anchor.diff:  
   
   
  -CLASS ZCL_ABAPGIT_FRONTEND_SERVICES IMPLEMENTATION.
  +CLASS zcl_abapgit_frontend_services IMPLEMENTATION.
   
   
     METHOD zif_abapgit_frontend_services~file_download.
  
positive.code:       lv_path     TYPE string.
  
      IF iv_extension = 'zip'.
        lv_filter = 'ZIP Files (*.ZIP)|*.ZIP|' && cl_gui_frontend_services=>filetype_all.
      ENDIF.
  
      cl_gui_frontend_services=>file_save_dialog(
  
negative.code:       lv_rc         TYPE i.
  
      IF iv_extension = 'zip'.
        lv_filter = 'ZIP Files (*.zip)|*.zip|' && cl_gui_frontend_services=>filetype_all.
      ENDIF.
  
      cl_gui_frontend_services=>file_open_dialog(
  