anchor.diff:    PUBLIC SECTION.
       CLASS-METHODS serialize
         IMPORTING is_item         TYPE st_item
  -      RETURNING value(rt_files) TYPE tt_files
  +      RETURNING VALUE(rt_files) TYPE tt_files
         RAISING   lcx_exception.
   
       CLASS-METHODS deserialize
  
positive.code:       IMPORTING is_item            TYPE st_item
                  iv_extra           TYPE clike OPTIONAL
                  iv_ext             TYPE string
        RETURNING value(rv_filename) TYPE string.
  
      CLASS-METHODS serialize_dynpros
        IMPORTING iv_program_name TYPE programm
  
negative.code:   PUBLIC SECTION.
      CLASS-METHODS serialize
        IMPORTING is_item         TYPE st_item
        RETURNING VALUE(rt_files) TYPE tt_files
        RAISING   lcx_exception.
  
      CLASS-METHODS deserialize
  