code: public static <T> StreamConverter<T> streamConverter(final ObjectMapper mapper) {
          return streamConverter(mapper, Arrays.asList(
                  APPLICATION_JSON_SEQ, APPLICATION_STREAM_JSON, APPLICATION_X_JSON_STREAM));
      }
docs: Create stream converter with custom {@link ObjectMapper object mapper}.
  
  @param <T> generic stream element type
  @param mapper custom {@link ObjectMapper object mapper}.
  @return stream converter with customer object mapper.