code: public String validate(Path path) throws IOException, SAXException {
          try (OneOffValidator validator = new OneOffValidator(asciiQuotes, detectLanguages, forceHTML, lineOffset, loadEntities, noStream, outputFormat, schemaUrl)) {
              return validator.validate(path);
          }
      }
docs: Validate the file at the given path
  
  @param path
  a valid {@link Path} to a readable file
  @return validation output {@link String}
  @throws IllegalStateException
  @throws IOException
  @throws SAXException