docs: public static File convertPdf2Tiff(File inputPdfFile) throws IOException {
          if (PDFBOX.equals(System.getProperty(PDF_LIBRARY))) {
              return PdfBoxUtilities.convertPdf2Tiff(inputPdfFile);
          } else {
              try {
                  return PdfGsUtilities.convertPdf2Tiff(inputPdfFile);
              } catch (Exception e) {
                  System.setProperty(PDF_LIBRARY, PDFBOX);
                  return convertPdf2Tiff(inputPdfFile);
              }
          }
      }