anchor.diff:  				   token_filter = TokenFilter}) ->
       M1 = translate_char_filter(CF, #{}),
       M2 = translate_tokeizer(Tokenizer, M1),
  -    make_token_filter(TokenFilter, M2).
  +    make_token_filter(TokenFilter, M2);
  +make_index_options(undefined) ->
  +    undefined.
   
   translate_char_filter('NFC', M) ->
       M#{char_filter => nfc};
  
positive.code: validate_attributes(["num_of_shards" | T], Acc) ->
      validate_attributes(T, [num_of_shards | Acc]);
  validate_attributes(["nodes" | T], Acc) ->
      validate_attributes(T, [nodes | Acc]);
  validate_attributes([_H | T], Acc) ->
      validate_attributes(T, Acc).
  
  
negative.code: 						  threshold = Threshold,
  						  set_value = SetValue}) ->
      {increment,
       decode_unsigned_default(Threshold, undefined),
       decode_unsigned_default(SetValue, undefined)};
  translate_update_instruction(#'UpdateInstruction'{instruction = 'OVERWRITE'}) ->
      overwrite.
  
  