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:       diff05 FOR TESTING,
        diff06 FOR TESTING.
  
  ENDCLASS.
  
  CLASS ltcl_diff IMPLEMENTATION.
  
    DEFINE _local.
  
negative.code:                            io_xml  = lo_xml ).
      APPEND ls_file TO rt_files.
  
    ENDMETHOD.                    "serialize
  
    METHOD deserialize.
  
  