anchor.diff:            iv_id                 TYPE ty_id
           RETURNING
             VALUE(ro_persistence) TYPE REF TO object,
  +
         clear_dynamic_fields
           CHANGING
             cs_complete_comm_assembly TYPE any,
  +
         clear_field
           IMPORTING
             iv_fieldname TYPE csequence
  
positive.code: 
    ENDMETHOD.
  
  
    METHOD clear_dynamic_fields.
  
      FIELD-SYMBOLS: <header> TYPE any.
  
negative.code:       CHANGING  cs_header    = <header> ).
  
    ENDMETHOD.
  
    METHOD clear_field.
  
  