anchor.diff:  
       CLASS-METHODS root_tree IMPORTING it_objects TYPE tt_objects
                                         iv_branch TYPE t_sha1
  -                            RETURNING VALUE(rt_nodes) TYPE tt_nodes
  +                            RETURNING value(rt_nodes) TYPE tt_nodes
                               RAISING lcx_exception.
   
       CLASS-METHODS receive_pack IMPORTING is_comment TYPE st_comment
  
positive.code:                c_version    TYPE x LENGTH 4 VALUE '00000002'.
  
      CLASS-METHODS type_and_length IMPORTING is_object TYPE st_object
                                    RETURNING VALUE(rv_xstring) TYPE xstring
                                    RAISING lcx_exception.
  
      CLASS-METHODS delta IMPORTING is_object TYPE st_object
  
negative.code:     CLASS-METHODS delta_header CHANGING cv_delta TYPE xstring.
  
      CLASS-METHODS get_type IMPORTING iv_x TYPE x
                             RETURNING value(rv_type) TYPE t_type
                             RAISING lcx_exception.
  
      CLASS-METHODS get_length EXPORTING ev_length TYPE i
  