code: def dictupdate(dest, upd, recursive_update=True, merge_lists=False):
      '''
      Recursive version of the default dict.update
  
      Merges upd recursively into dest
  
      If recursive_update=False, will use the classic dict.update, or fall back
      on a manual merge (helpful for non-dict types like ``FunctionWrapper``).
  
      If ``merge_lists=True``, will aggregate list object types instead of replace.
      The list in ``upd`` is added to the list in ``dest``, so the resulting list
      is ``dest[key] + upd[key]``. This behaviour is only activated when
      ``recursive_update=True``. By default ``merge_lists=False``.
      '''
      return salt.utils.dictupdate.update(dest, upd, recursive_update=recursive_update, merge_lists=merge_listsf dictupdate(dest, upd, recursive_update=True, merge_lists=False):
      '''
      Recursive version of the default dict.update
  
      Merges upd recursively into dest
  
      If recursive_update=False, will use the classic dict.update, or fall back
      on a manual merge (helpful for non-dict types like ``FunctionWrapper``).
  
      If ``merge_lists=True``, will aggregate list object types instead of replace.
      The list in ``upd`` is added to the list in ``dest``, so the resulting list
      is ``dest[key] + upd[key]``. This behaviour is only activated when
      ``recursive_update=True``. By default ``merge_lists=False``.
      '''
      return salt.utils.dictupdate.update(dest, upd, recursive_update=recursive_update, merge_lists=merge_lists)
docs: Recursive version of the default dict.update
  
      Merges upd recursively into dest
  
      If recursive_update=False, will use the classic dict.update, or fall back
      on a manual merge (helpful for non-dict types like ``FunctionWrapper``).
  
      If ``merge_lists=True``, will aggregate list object types instead of replace.
      The list in ``upd`` is added to the list in ``dest``, so the resulting list
      is ``dest[key] + upd[key]``. This behaviour is only activated when
      ``recursive_update=True``. By default ``merge_lists=False``.