anchor.diff:  
       CLASS-METHODS get_null
         RETURNING VALUE(rv_c) TYPE char1.
  +
  +    CLASS-METHODS send_receive
  +      IMPORTING ii_client      TYPE REF TO if_http_client
  +      RAISING   lcx_exception.
   
   ENDCLASS.                    "lcl_transport DEFINITION
   
  
positive.code: 
      li_client->request->set_data( lv_xstring ).
  
      li_client->send( ).
      li_client->receive( ).
      check_http_200( li_client ).
  
      lv_xstring = li_client->response->get_data( ).
  
negative.code:   METHOD branch_list.
  
      DATA: lv_data TYPE string,
            lv_uri  TYPE string.
  
  
      cl_http_client=>create_by_url(
  