anchor.diff:        IMPORTING io_xml TYPE REF TO lcl_xml
         RAISING   lcx_exception.
   
  -    METHODS exists
  -      IMPORTING is_clskey        TYPE seoclskey
  -      RETURNING VALUE(rv_exists) TYPE sap_bool.
  -
       METHODS serialize_abap
         IMPORTING is_clskey        TYPE seoclskey
         RETURNING VALUE(rt_source) TYPE ty_string_tt
  
positive.code: *----------------------------------------------------------------------*
  CLASS lcl_object_nrob IMPLEMENTATION.
  
    METHOD lif_object~serialize.
  
      DATA: lo_xml        TYPE REF TO lcl_xml,
  
negative.code: *
  *----------------------------------------------------------------------*
  CLASS lcl_object_shlp IMPLEMENTATION.
  
    METHOD lif_object~exists.
  * todo, implement exists logic
      rv_bool = abap_true.
    ENDMETHOD.
  
    METHOD lif_object~jump.
  
  