anchor.diff:      CLASS-METHODS: read_abap IMPORTING is_item  TYPE st_item
                                          iv_extra TYPE string OPTIONAL
                                          it_files TYPE tt_files
  +                                       iv_error TYPE abap_bool DEFAULT abap_true
                               CHANGING ct_abap TYPE STANDARD TABLE
                               RAISING lcx_exception.
   
  
positive.code:                                                   io_xml   TYPE REF TO lcl_xml
                                          RAISING lcx_exception.
  
      CLASS-METHODS exists IMPORTING is_clskey TYPE seoclskey
                           RETURNING value(rv_exists) TYPE abap_bool.
  
  
negative.code: 
      DATA: ls_vseoclass TYPE vseoclass,
            lv_cp        TYPE program,
            lt_tpool     TYPE textpool_table,
            lv_object    TYPE dokhl-object,
            lv_state     TYPE dokhl-dokstate,
            lt_lines     TYPE tlinetab.
  
  
      CALL FUNCTION 'SEO_CLASS_GET'
  