anchor.diff:  
       CLASS-METHODS install
         IMPORTING iv_url TYPE string
  +      RAISING   lcx_exception.
  +
  +    CLASS-METHODS analyze_existing
  +      IMPORTING it_results       TYPE tt_results
  +      RETURNING VALUE(rv_cancel) TYPE abap_bool
         RAISING   lcx_exception.
   
       CLASS-METHODS add
  
positive.code:     view( render( ) ).
  
    ENDMETHOD.                    "install
  
    METHOD render_css.
  
  
negative.code:                          IMPORTING et_files  = lt_files
                                     ev_branch = lv_branch ).
  
      lt_results = lcl_objects=>status( it_files   = lt_files
                                        iv_package = lv_package ).
      IF analyze_existing( lt_results ) = abap_true.
        RETURN.
      ENDIF.
  
      lcl_objects=>deserialize( it_files   = lt_files
                                iv_package = lv_package ).
  
  