public void setOutputType(OUTPUT_TYPE outputType) {
        this.outputType = outputType;
        userConfigured.add("outputType");
    }
Set output type from ocr process.  Default is "txt", but can be "hocr".
Default value is {@link OUTPUT_TYPE#TXT}.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-ocr-module/src/main/java/org/apache/tika/parser/ocr/TesseractOCRConfig.java