code: public Console format(String format, Object... args) {
        try (Formatter f = new Formatter(writer)) {
          f.format(format, args);
          f.flush();
          return this;
        }
      }
docs: Writes a formatted string to the console using
  the specified format string and arguments.
  
  @param format the format string (see {@link java.util.Formatter#format})
  @param args
  the list of arguments passed to the formatter. If there are
  more arguments than required by {@code format},
  additional arguments are ignored.
  @return the console instance.