code: public static Study readStudy(final File file) throws IOException {
          checkNotNull(file);
          try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
              return readStudy(reader);
          }
      }
docs: Read a study from the specified file.
  
  @param file file, must not be null
  @return a study read from the specified file
  @throws IOException if an I/O error occurs