.duplicateTermRemoved(replaceDuplication)
                            .spaceChars(spaceChars)
                            .execute();
                }
                return ReaderUtil.readText(reader);
            }
        } catch (final TikaException e) {
            throw e;
        } catch (final Exception e) {
            throw new ExtractException("Failed to read a content.", e);

        if (indexMappings == null || !indexMappings.containsKey("properties")) {
            final AcknowledgedResponse putMappingResponse = fesenClient.get(c -> {
                final String source = FileUtil.readText("mapping/" + mappingName + ".json");
                return c.admin().indices().preparePutMapping(index).setSource(source, XContentType.JSON).execute();
            });
            if (putMappingResponse.isAcknowledged()) {