docs: protected String getOCRText(String filename, int pageNum) {
          if (filename != null && !filename.isEmpty()) {
              api.TessBaseAPISetInputName(handle, filename);
          }
  
          Pointer utf8Text = renderedFormat == RenderedFormat.HOCR ? api.TessBaseAPIGetHOCRText(handle, pageNum - 1) : api.TessBaseAPIGetUTF8Text(handle);
          String str = utf8Text.getString(0);
          api.TessDeleteText(utf8Text);
          return str;
      }