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: 
      METHODS xml_render
        IMPORTING iv_normalize     TYPE sap_bool DEFAULT abap_true
        RETURNING VALUE(rv_string) TYPE string.
  
      METHODS xml_element
        IMPORTING iv_name           TYPE string
        RETURNING VALUE(ri_element) TYPE REF TO if_ixml_element.
  
      METHODS xml_add
        IMPORTING ii_root    TYPE REF TO if_ixml_element OPTIONAL
  
negative.code: 
      CLASS-METHODS read_progdir
        IMPORTING iv_program        TYPE programm
        RETURNING value(rs_progdir) TYPE ty_progdir.
  
      CLASS-METHODS serialize_program
        IMPORTING is_item         TYPE st_item
                  iv_program      TYPE programm OPTIONAL
                  iv_extra        TYPE clike OPTIONAL
        RETURNING value(rt_files) TYPE tt_files
        RAISING   lcx_exception.
  
      CLASS-METHODS deserialize_program
  