public static DefaultProcessCommands secondary(File directory, int processNumber) {
    return new DefaultProcessCommands(directory, processNumber, false);
  }
@Test
  public void secondary_fails_if_processNumber_is_less_than_0() throws Exception {
    int processNumber = -2;

    expectProcessNumberNoValidIAE(() -> DefaultProcessCommands.secondary(temp.newFolder(), processNumber), processNumber);
  }